THE TOOLSORCERER COLLECTION
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Images & DesignImage Resizer & ConverterHighly recommendedResize and convert HEIC, JPG, PNG and WebP locally. Set upload size targets, compare previews, and download images or a ZIP. Includes iPhone HEIC…
Images & DesignImage to Text / OCRHighly recommendedExtract printed text in 16 languages from images locally. Rotate, crop and adjust contrast, then edit, copy or download the text. Includes…
Developer & DataJSON Formatter & ValidatorHighly recommendedInstantly format, minify, and validate your JSON code. Features include live preview, syntax highlighting, tree viewer, and structure stats.
PDF ToolsPDF Merge & SplitHighly recommendedMerge PDFs in order, extract selected pages or split them into individual PDFs locally. Page ranges, file limits, downloads, instructions and Q&A.…
PDF ToolsPDF Page OrganizerHighly recommendedOrganize PDF pages locally with thumbnails, reordering, rotation, duplication, deletion and undo. Preview and download a new PDF with selectable text.
Images & DesignPSD StudioHighly recommendedFree browser PSD editor: open PSD, PSB and images, edit layers, masks, selections, text, shapes, adjustment layers, filters and styles in full…
Passwords & GeneratorsQR Code GeneratorHighly recommendedCreate QR codes locally for website links, text and Wi-Fi. Preview your code, choose clear image settings and download PNG or SVG. Includes how-to…
Text & WritingText Compare / Diff CheckerHighly recommendedCompare two texts locally with word or line highlighting, ignore-case and spacing options, change navigation and TXT, JSON or printable HTML reports.
Text & WritingText to SpeechHighly recommendedCreate English speech locally with 28 voices, instant audio samples, adjustable pacing and WAV or MP3 downloads. Includes script projects and…
Audio & VideoVideo EditorHighly recommendedEdit short videos locally with a timeline, clip trims, transitions, photos, music, titles, captions and image/video overlays. Save projects and…
Images & DesignAI Background Remover & Cutout EditorRecommendedRemove image backgrounds locally, refine the cutout with erase and restore brushes, replace the background and download PNG. Includes zoom, undo…
Images & DesignBatch Image Processing WorkbenchRecommendedProcess a batch of photos locally with shared recipes and per-image overrides. Crop, resize, adjust colors, watermark, create multiple output…
Developer & DataCSV & TSV Table EditorRecommendedEdit CSV or TSV cells and headers locally. Add rows and columns, undo edits, filter, sort exact decimals, remove duplicates and export full or…
Developer & DataFile Checksum CalculatorRecommendedCalculate SHA-256 or SHA-512 checksums locally, compare expected values and download a file hash report. No file uploads. Includes examples,…
GIF & AnimationGIF EditorRecommendedFree online GIF editor: reorder, delete and retime frames, crop, resize, rotate, adjust colors, add text or draw, then export GIF, APNG or PNG…
GIF & AnimationGIF MakerRecommendedFree online GIF maker: add PNG, JPEG, WebP or GIF images, drag to order, set timing, add crossfades and text, and export a high-quality GIF, APNG…
Images & DesignImage Compare & Before / After SliderRecommendedCompare two local images with a draggable before/after slider, side-by-side panels or opacity overlay. Adjust fitting and export a labeled PNG or JPG.
Text & WritingMarkdown Editor & PreviewRecommendedWrite Markdown with a live, isolated preview. Open UTF-8 files, use editing shortcuts and download Markdown or sanitized HTML. Includes tables,…
Passwords & GeneratorsPassphrase GeneratorRecommendedGenerate secure, memorable passphrases using themed word lists, custom patterns, and smart formatting options. Ideal for passwords, mnemonics, and…
PDF ToolsPDF CompressorRecommendedCompress PDF files locally with text-preserving structural compaction or image-based compression for scans. Compare actual savings, preview pages…
PDF ToolsPDF Editor & Form FillerRecommendedEdit a PDF locally: fill forms, add text, images, drawn signatures, highlights and shapes. Create new fillable fields, undo edits, save plans and…
PDF ToolsPDF to Text ExtractorRecommendedExtract selectable text from PDF pages locally. Choose page ranges, review line breaks, unlock password-protected files and download TXT or page…
Passwords & GeneratorsRandom Password GeneratorRecommendedGenerate secure, customizable passwords with advanced options like symbols, exclusions, batch output, entropy meter, and shareable settings.
Text & WritingText Case ConverterRecommendedConvert your text to UPPERCASE, lowercase, Capitalized, and more. Live conversion, clipboard tools, and downloadable results.
ConvertersUnit ConverterRecommendedConvert length, mass, temperature, area, volume, speed, time and digital storage. Strict inputs, batch reports and clearly labeled US, imperial…
GIF & AnimationVideo to GIF ConverterRecommendedFree video to GIF converter: trim on a visual timeline, crop, resize, set speed and FPS, preview the output and see the file size before exporting…
Developer & DataZIP File ManagerRecommendedCreate ZIP archives, inspect file paths and sizes, preview literal UTF-8 text, extract one file or repackage selected entries. Local cancellable…
Everyday Calculators2D Point Distance CalculatorMeasure the straight-line distance and midpoint between coordinates.
Developer & Data3D Model Viewer & Conversion WorkbenchOpen local GLB, glTF, OBJ or STL models in an interactive 3D workspace. Inspect meshes and dimensions, adjust transforms and materials, measure…
Everyday Calculators3D Point Distance CalculatorMeasure distance between two points in three-dimensional space.
Developer & Data3D Print Model Inspection & RepairInspect STL and OBJ meshes for open boundaries, non-manifold edges, duplicates and winding problems. Clean faces, orient surfaces, fill suitable…
Everyday Calculators3D Vector Magnitude CalculatorNormalize a vector and find its Euclidean length.
ConvertersAcceleration ConverterConvert acceleration measurements including standard gravity and Gal units.
PDF ToolsAdd Page Numbers to PDFAdd page numbers to PDF files locally. Choose decimal or Roman labels, skip covers, set header or footer placement, preview the saved PDF and…
Everyday CalculatorsAge & Birthday CalculatorFind completed years, total elapsed days and days until the next birthday. Choose the anniversary rule for February 29 birthdays.
Audio & VideoAmplitude to Decibels CalculatorCompare positive amplitudes as a gain in decibels.
ConvertersAngle ConverterConvert angles between radians, degrees, turns, gradians and angular subdivisions.
ConvertersAngular Velocity ConverterConvert rotation rates between radians, degrees, RPM and revolutions per second.
GIF & AnimationAnimation Frame Timing PlannerPlan animation timing from frame groups, compare exact and GIF-rounded delays, inspect a visual sequence and export a frame timing manifest.
Developer & DataAPI Rate Limit Budget PlannerPlan request throughput within a quota and reserved allowance.
Developer & DataAPI Testing & Mock Data WorkbenchBuild API request collections, import OpenAPI definitions, inspect and compare responses, generate mock JSON and check supported schema…
Images & DesignAPNG Animation WorkbenchCreate and edit full-color animated PNGs: import APNG or still images, reorder frames, change timing and loops, resize, preview and export…
Everyday CalculatorsArc Length CalculatorFind an arc length and sector area from radius and angle.
Everyday CalculatorsArithmetic Sequence CalculatorFind a term and partial sum of a constant-difference sequence.
Text & WritingASCII Art MakerConvert images or short text into ASCII art. Tune character shading, detail, brightness, contrast and dithering; copy text or export TXT and…
Images & DesignAspect Ratio & Resize CalculatorCalculate exact aspect ratios, proportional resize dimensions, centered crop regions and fit padding. Compare layouts locally and download a TXT…
Developer & DataASS ↔ SRT Subtitle ConverterConvert plain ASS dialogue to SRT or create a styled ASS subtitle script from SRT cues.
Everyday CalculatorsAssignment Score Target CalculatorFind the score needed on one remaining assignment to reach a target overall grade.
Audio & VideoAudio Bitcrusher & Lo-Fi MakerCreate retro and lo-fi audio with bit-depth reduction, sample hold, drive, tone filtering and wet/dry controls. Preview and export WAV or MP3 locally.
Audio & VideoAudio Buffer Latency CalculatorEstimate ideal buffering delay from buffer size, rate and buffer count.
Audio & VideoAudio ConverterConvert a recording to MP3, WAV, FLAC, Ogg or M4A. Trim the useful part and tune quality, channels and fades before downloading.
Audio & VideoAudio Crossfade Duration PlannerCalculate final duration when equal overlap is used between clips.
Audio & VideoAudio Delay Distance CalculatorEstimate propagation delay over distance at a supplied sound speed.
Audio & VideoAudio EqualizerShape audio with eight frequency bands, voice and music presets, wet/dry comparison, output gain and peak-protected WAV or MP3 downloads.
Audio & VideoAudio JoinerJoin audio clips locally. Reorder and trim recordings, add silence or crossfades, preview the result and download WAV or MP3 with a clip timing…
Audio & VideoAudio Loop & Sample Pack BuilderSelect audio on a waveform, slice by beats or silence, crossfade loop boundaries, normalize samples and export a WAV sample pack with BPM metadata.
Audio & VideoAudio Loop Seam PlannerPlan loop duration after removing a tail overlap for a seam crossfade.
ConvertersAudio Multitrack EditorArrange recordings, music and sound effects on a multitrack timeline. Trim, split, crossfade, automate volume and mix with EQ, stereo pan and…
Audio & VideoAudio Noise ReductionReduce steady hiss and electrical hum in a recording. Start gently, compare the result and keep the details you want to hear.
Audio & VideoAudio Peak Headroom CalculatorPlan gain against a target digital peak ceiling.
Audio & VideoAudio Sample Count CalculatorTranslate a duration to sample count and sample-period precision.
Audio & VideoAudio Spectrogram MakerVisualize local audio as a frequency-over-time spectrogram. Select channels and ranges, adjust FFT/frequency scales and export a labeled PNG or…
Audio & VideoAudio Volume & NormalizerMake a quiet recording easier to hear, reduce loud peaks or adjust listening levels. Compare the original and processed sound before downloading.
Images & DesignAutomatic Image Palette ExtractorFind dominant colors in an image automatically, merge similar shades, inspect text contrast and export reusable CSS, JSON or a PNG palette.
Developer & DataAvailability Downtime BudgetCalculate allowable downtime for a chosen uptime target and period.
Everyday CalculatorsAverage & Statistics CalculatorFind mean, median, modes, range and standard deviation from a list of numbers. Choose sample or population deviation.
Everyday CalculatorsAverage Time CalculatorAverage a list of clock times using a same-day arithmetic mean or a circular mean around midnight. Review earliest/latest times and export the…
Everyday CalculatorsBaker’s Percentage CalculatorCalculate dough ingredient weights relative to flour mass.
Text & WritingBase64 Encoder & DecoderEncode Unicode text or any file to standard or URL-safe Base64. Decode with strict padding validation, inspect UTF-8 or binary previews and…
Developer & DataBase64 Size EstimatorCalculate Base64 character count and padding for a binary byte length.
Developer & DataBatch File RenamerPreview batch filename rules, numbering and collision handling. Download renamed file copies in a local ZIP without changing files on your computer.
Images & DesignBatch Image WatermarkWatermark JPG, PNG and WebP images locally with text or a logo. Preview placement, repeat watermarks, keep image dimensions and download images or…
Developer & DataBatch Job Chunk PlannerPlan chunk count, tail size and parallel processing rounds.
Text & WritingBatch URL CleanerClean a list of shared links without opening them. Remove common tracking parameters, preserve useful query bytes and leave recognized signed…
Everyday CalculatorsBattery Runtime EstimatorEstimate ideal runtime from capacity, voltage, load and supplied usable fraction.
Everyday CalculatorsBead String PlannerEstimate bead count along a length with spacer and clasp allowances.
Audio & VideoBeat Sample Grid CalculatorCalculate the fractional samples per beat and whole-sample timing error.
Audio & VideoBefore & After Video ComparisonCreate a focused two-video comparison with synchronized playback, side-by-side or stacked panels, a draggable wipe, clear labels and local…
Developer & DataBinary Bit WorkbenchInspect and transform binary values: count bits, invert, reverse or shuffle them, and convert unsigned binary numbers to base −2 negabinary.…
Everyday CalculatorsBingo Card GeneratorCreate numbered or custom-word 5×5 bingo cards for your group, with a free center.
Everyday CalculatorsBinomial Probability CalculatorCalculate the probability of exactly k successes in independent trials.
Developer & DataBitmap Font Atlas PlannerEstimate glyph grid dimensions for a fixed-cell font atlas.
Developer & DataBMP Bit Depth & Channel WorkbenchConvert BMP bit depths, inspect indexed palettes and create RGB/BGR raw pixel exports. Preview 1/4/8/16/24/32-bit results with dithering,…
Everyday CalculatorsBook Signature Page PlannerPlan complete signatures and blank pages for a booklet.
Everyday CalculatorsBook Spine Width EstimatorEstimate a book block’s spine thickness from pages and sheet caliper.
Images & DesignBPG Image ConverterConvert supported still BPG images to PNG, JPEG or WebP locally with preview, transparency and adjustable export quality.
Audio & VideoBPM Delay Time CalculatorFind straight, dotted and triplet delay times at a musical tempo.
Everyday CalculatorsBreak-even CalculatorEstimate units and revenue needed to cover fixed and variable costs.
Everyday CalculatorsBrick Wall Quantity EstimatorEstimate face brick count from wall area and mortar module dimensions.
Developer & DataBulk URL Slug GeneratorCreate URL path slugs from a list of titles with accent cleanup, Unicode or ASCII mode, length limits, prefixes, duplicate suffixes and…
Text & WritingBulk Username FormatterTurn a list of names into consistent username drafts, with character rules, length limits, duplicate resolution and a row-by-row export.
Everyday CalculatorsBuoyancy Force CalculatorCalculate buoyant force from displaced volume and fluid density.
Everyday CalculatorsCake Pan Batter ScalerScale batter between round pans by internal volume.
Developer & DataCalendar File BuilderCreate an importable calendar event with recurrence and a reminder. Review every occurrence before downloading the ICS file.
Images & DesignCamera Crop Factor CalculatorCompare sensor diagonal and equivalent focal length against a reference format.
Images & DesignCamera Field of View CalculatorFind horizontal and vertical viewing angles from sensor dimensions and focal length.
Developer & DataCamera Follow Smoothing CalculatorCalculate frame-rate-aware exponential interpolation for camera following.
Everyday CalculatorsCandle Wax PlannerEstimate wax and fragrance mass from your container capacity and chosen density.
ConvertersCapacitance ConverterConvert farads and common capacitor-value prefixes in mixed-unit batches.
Everyday CalculatorsCapacitor Energy CalculatorCalculate ideal stored energy and charge from capacitance and voltage.
Everyday CalculatorsCapsule Volume CalculatorCalculate a cylinder with two hemispherical ends.
Developer & DataCDN Cache Savings CalculatorEstimate origin traffic reduction from cache hit rate.
Everyday CalculatorsCentripetal Acceleration CalculatorCalculate acceleration and force for uniform circular motion.
Audio & VideoCents Detune CalculatorMeasure pitch difference between two frequencies.
Developer & Datachmod Permission CalculatorConvert Unix read, write and execute checkboxes into octal chmod permissions and symbolic notation. Inspect owner, group and others with a command…
Everyday CalculatorsChord & Sagitta CalculatorFind a circle’s radius from chord width and arc rise.
Everyday CalculatorsCircle Segment CalculatorFind the area and chord of a circular segment from its radius and central angle.
Everyday CalculatorsCoffee Brew Ratio CalculatorPlan coffee and water quantities from a brew ratio.
Developer & DataColor Contrast CheckerCheck WCAG2.2 color contrast with transparent layers, text-size previews, batch comparisons and suggested color adjustments. Copy CSS variables or…
Images & DesignColor Format Converter ToolConvert CSS colors with transparency, explore gradients and palettes, and compare WCAG text contrast on a chosen background. Local processing with…
Everyday CalculatorsCombination CalculatorCount unordered selections without replacement.
Everyday CalculatorsCommute Time BudgetCompare weekly and annual time spent commuting.
Everyday CalculatorsCompost Mix Volume PlannerDivide a target compost mix by a volume ratio you supply.
Everyday CalculatorsCompound Interest CalculatorExplore savings growth with monthly contributions and an annual interest estimate.
Audio & VideoCompressed Audio Size EstimatorEstimate audio file size from bitrate and duration.
Everyday CalculatorsConcrete Volume CalculatorEstimate concrete volume for a rectangular slab or cylindrical fill.
Everyday CalculatorsCone Volume CalculatorFind a cone’s volume, slant height and surface area.
Everyday CalculatorsConstant Acceleration Distance CalculatorFind displacement and final velocity under constant acceleration.
Everyday CalculatorsContainer Fill Percentage CalculatorCalculate fill level and remaining capacity for a straight-sided container.
Developer & DataContent Security Policy BuilderDraft a Content Security Policy from readable directives, inspect source lists and review notes, and export response-header, Nginx, Apache or…
ConvertersCoordinate ConverterConvert latitude and longitude between decimal degrees and degrees, minutes and seconds.
Everyday CalculatorsCountdown TimerCreate a live countdown to a date and time on your device.
Everyday CalculatorsCounter & Score KeeperKeep multiple tallies or a simple scoreboard with targets, adjustable steps, undo, optional shortcuts, device saving and CSV/JSON export.
Passwords & GeneratorsCoupon Code GeneratorCreate unique-in-batch promotion codes with a prefix, readable alphabet and downloadable code list.
Everyday CalculatorsCrochet Blanket Stitch PlannerPlan blanket repeats from your measured repeat width and row height.
Developer & DataCron Schedule StudioBuild five- or six-field cron expressions, preview next or previous runs across timezones, compare schedules and export CSV, JSON or calendar events.
Developer & DataCSS Animation GeneratorCreate bounce, slide, fade, zoom, spin and swing CSS animations. Preview playback and timing, scrub the first iteration and export…
Developer & DataCSS Box Shadow & Border Radius GeneratorDesign layered inset and outer box shadows, four corner radii, borders and colors with live previews. Copy or download CSS in pixels or rem units.
Developer & DataCSS Clip-path GeneratorCreate responsive polygon clip paths with editable points, geometry undo and live image previews. Export CSS, SVG silhouettes, clipped PNGs and…
Developer & DataCSS Color ExtractorExtract explicit color tokens from CSS declarations, inspect where they occur and export a reusable CSS variable palette with a source audit.
Developer & DataCSS Cubic Bézier EditorDesign CSS easing curves with a plotted graph, editable control points, animated motion preview and reusable transition CSS. Try standard or…
Developer & DataCSS Custom Property ExplorerTrace CSS variable definitions, var() uses and nested fallbacks. Review missing source declarations, unreferenced names and potential dependency…
Images & DesignCSS Filter PlaygroundBuild reusable CSS filters with live image comparison, adjustable presets, filter ordering, local image previews and CSS or JSON settings exports.
Developer & DataCSS Flexbox PlaygroundExplore Flexbox direction, wrapping, alignment and grow/shrink sizing with an adjustable preview. Export CSS, a standalone HTML demo or reusable…
Developer & DataCSS Gradient GeneratorCreate linear, radial and conic gradients with editable color stops, positions, opacity and presets. Copy CSS or export a PNG and settings JSON.
Developer & DataCSS Grid Layout GeneratorCreate equal-column, sidebar and auto-fit card layouts with a responsive preview. Copy CSS, download a working HTML demo and save reusable grid…
Developer & DataCSS Minifier & BeautifierMinify, beautify and check CSS syntax locally with parser-based processing, license comment controls, accurate rule statistics and CSS exports.
Developer & DataCSS Specificity CalculatorCalculate CSS selector specificity, inspect contribution explanations and sort comma-separated selectors. Supports modern is, where, has, not and…
Developer & DataCSV ↔ GeoJSON Point ConverterConvert coordinate rows to a GeoJSON point collection and back while preserving scalar properties.
Developer & DataCSV ↔ XML Records ConverterConvert quoted CSV to a structured XML record table and import the same XML structure with a column audit.
Developer & DataCSV Data ProfilerProfile CSV tables locally for missing values, duplicates, column types, distinct values and uneven rows. Export a data-quality report without…
Developer & DataCSV Group & SummarizeGroup CSV/TSV rows by up to three fields. Calculate counts, exact decimal sums, means and extrema locally, inspect a table and export CSV/JSON…
Developer & DataCSV Mapping Recipe RunnerReuse a JSON recipe to rename, reorder, select and transform CSV columns. Prepare a starting mapping, apply safe text steps, preserve text IDs and…
Developer & DataCSV Pivot TableBuild a CSV cross-tab with row and column categories, exact decimal sums, weighted means, counts, extrema and marginal totals. Export CSV and JSON…
Developer & DataCSV ReconciliationCompare two table versions by a stable key. Separate added, removed and changed records without confusing row movement with edits.
Developer & DataCSV to Calendar Event ConverterTurn UTC-timed CSV events into an iCalendar file with descriptions, locations and stable event identifiers.
Developer & DataCSV to GPX Waypoint ConverterCreate a GPX 1.1 waypoint file from a CSV location list with names and optional elevations.
Developer & DataCSV to JSON & JSON to CSV ConverterConvert CSV and JSON locally with delimiter controls, exact number handling, table previews, clear errors and file exports. Includes examples and…
Developer & DataCSV to KML Point ConverterCreate named map placemarks with validated WGS84 coordinates, altitude settings and escaped descriptions.
Developer & DataCSV to LaTeX Table ConverterBuild escaped LaTeX tables from CSV with alignment, captions, labels and longtable output.
Developer & DataCSV to vCard Contact ConverterBuild a multi-contact vCard 4.0 file with mapped names, email, telephone and organization fields.
Audio & VideoCUE Sheet InspectorInspect track offsets, 75-frame timing and inferred durations from a CUE sheet.
ConvertersCurrency ConverterConvert currencies using dated daily reference rates, cross-rates, arithmetic and target amounts. Includes cache status, provider attribution and…
Everyday CalculatorsCurtain Fabric PlannerEstimate curtain fabric length from width, fullness and hem allowances.
Everyday CalculatorsCylinder Capacity CalculatorFind cylindrical container capacity and surface area.
Developer & DataData Cleaning & Conversion WorkbenchClean and combine CSV, Excel, JSON and XML tables locally. Preview transformations, join datasets, pivot, validate, edit cells, save projects and…
Developer & DataData Size & Transfer Time CalculatorEstimate file download, upload and backup times. Convert decimal/binary sizes, compare connection speeds, account for efficiency and calculate a…
Developer & DataDatabase Row Storage EstimatorEstimate table storage from row size and supplied index allowance.
Everyday CalculatorsDate Difference & Working DaysCount calendar days and working days between two dates. Choose working weekdays and exclude your own holiday dates.
ConvertersDate List Converter & ValidatorConvert lists of calendar dates between ISO, day/month/year and month/day/year formats. Flag invalid dates, weekdays and repeated dates without…
Everyday CalculatorsDebt Payoff CalculatorFind how long a fixed monthly payment takes to repay a debt.
Audio & VideoDecibel Amplitude Ratio CalculatorTranslate an amplitude gain in decibels to a linear multiplier.
Everyday CalculatorsDeck Board PlannerEstimate parallel decking boards with spacing and extra allowance.
ConvertersDensity ConverterConvert material density between SI, gram-based and imperial mass-per-volume units.
Developer & DataDiagram & Flowchart StudioCreate Mermaid flowcharts, sequence diagrams, database relationships, timelines and mind maps with templates. Preview locally and export SVG, PNG…
Everyday CalculatorsDice RollerRoll a set of common tabletop dice, apply a modifier and review every roll.
Text & WritingDigit Manipulation WorkbenchReverse decimal or hexadecimal digits, or shift each digit independently with wrapping. Preserve leading zeros, signs and optional hexadecimal…
Passwords & GeneratorsDigital Clock Image GeneratorCreate a static digital clock graphic for thumbnails, presentations and mockups. Choose 12/24-hour time, seconds, a caption, colors and SVG or PNG…
Everyday CalculatorsDimensional Weight CalculatorCompare actual and volumetric shipping weight for one or many packages, with custom divisors, rounding, quantity totals and exportable results.
Everyday CalculatorsDiscount CalculatorCalculate a sale price with two successive discounts, quantity and an optional entered tax rate. See savings and the effective combined discount.
Developer & DataDocker Compose InspectorExplore service images, ports, dependencies and runtime settings in local Compose YAML.
Developer & DataDockerfile InspectorInspect build stages and instructions, mutable image tags, user settings and possible secret-related declarations.
Everyday CalculatorsDog Age CalculatorCompare a dog’s age with an approximate human-equivalent age using a general medium-dog guideline or a clearly labeled Labrador research formula.
Everyday CalculatorsDrip Irrigation Flow PlannerEstimate irrigation demand from emitter count and rated flow.
ConvertersDynamic Viscosity ConverterConvert fluid dynamic viscosity, distinguishing poise from pascal-seconds.
Text & WritingEbook Builder & ConverterTurn your writing into an ebook with editable chapters, a cover, book metadata and a linked table of contents. Import Markdown, text, HTML or…
ConvertersElectric Charge ConverterConvert coulombs, amp-hours and elementary charge counts.
ConvertersElectrical Conductance ConverterConvert conductance unit scales while keeping conductance distinct from conductivity.
ConvertersElectrical Conductivity ConverterConvert material or solution conductivity with explicit length and prefix scales.
ConvertersElectrical Resistivity ConverterConvert material resistivity using length and cross-sectional-area conventions.
Everyday CalculatorsElectricity Cost CalculatorEstimate appliance energy use and running cost from wattage and time.
Everyday CalculatorsEllipse Area CalculatorCalculate an oval area using its full major and minor axis lengths.
Everyday CalculatorsEllipsoid Volume CalculatorCalculate an ellipsoid volume from its three full diameters.
Developer & DataEmail Header AnalyzerReview pasted email headers, unfold continuation lines and inspect a reported delivery timeline. Summarize declared SPF, DKIM and DMARC results…
Text & WritingEmail Signature GeneratorMake a clean text-and-link email signature with a copyable HTML file.
Images & DesignEmbroidery Design PreparationDraw or import outlines, plan basic stitches, arrange thread colors and simulate the sequence. Export a checked DST, stitch CSV, SVG artwork and…
Text & WritingEML Email ReaderRead email headers, decode text MIME bodies and list attachment metadata without opening attachments.
ConvertersEnergy ConverterConvert joules, electricity energy, thermochemical calories and other energy units with a batch audit.
Developer & DataEnvironment File Compare & ValidatorCompare two dotenv-style configurations by key, find missing or changed values and detect duplicate keys or syntax issues. Export a redacted…
Text & WritingEPUB to Text Reader & ExtractorRead supported local EPUB chapters as plain text, search the book and export chapters or the full book as TXT. Includes chapter order and…
Audio & VideoEqual-Power Stereo Pan CalculatorCalculate ideal left and right gains for a mono source.
Developer & DataError Budget CalculatorCalculate failed-request allowance for a request success objective.
Everyday CalculatorsEvent Budget PlannerCompare planned and actual event expenses, ticket revenue and your break-even ticket count.
Everyday CalculatorsEvent Table Seating PlannerCalculate table count and unused seats for an event.
Everyday CalculatorsEvent Ticket Capacity PlannerPlan sellable tickets after staff and reserved capacity.
Developer & DataExcel Workbook ExplorerOpen XLSX, XLS, ODS and CSV spreadsheets locally. Browse sheets, search workbook values, inspect stored formulas and export matching rows as XLSX,…
Passwords & GeneratorsFake Name GeneratorGenerate fictional profiles locally or with RandomUser. Choose regional names, ages and reusable seeds; search stable data and export names, full…
Text & WritingFancy Text GeneratorCompare 18 Unicode text styles with live previews, copy buttons, favorites, decorative frames and plain-text normalization. Download one style or…
Images & DesignFavicon & App Icon Pack GeneratorCreate ICO, PNG, Apple touch and Android website icons locally. Preview your logo at small sizes and download a ZIP with a manifest and…
Everyday CalculatorsFence Panel PlannerEstimate full panels and posts along a straight fence run.
Developer & DataFile ↔ ASCII85 ConverterConvert binary files to Adobe-style ASCII85 with optional framing and compact zero groups.
Developer & DataFile ↔ Base32 ConverterEncode files or text as RFC 4648 Base32 or Base32hex and decode back to bytes with strict padding checks.
Developer & DataFile ↔ C Byte Array ConverterCreate a firmware byte array with configurable name and line width, or import one strict array initializer.
Developer & DataFile ↔ SQL Blob Literal ConverterPrepare binary literals for SQLite/MySQL or PostgreSQL and decode matching literals without executing SQL.
Everyday CalculatorsFinal Grade CalculatorFind the exam score needed to reach your desired overall course grade.
Text & WritingFind & Replace / Text CleanupFind and replace text with ordered rules, whole-word matching and optional regex captures. Preview matches, clean whitespace and download your…
Developer & DataFixed Timestep Simulation PlannerPlan update interval and estimated simulation CPU load.
Developer & DataFixed-Width Text & CSV ConverterConvert CSV or TSV to aligned fixed-width text, or split a fixed-width file into CSV using explicit column widths. Preserve identifiers and…
Text & WritingFlashcard Maker & StudyCreate and study local CSV/TSV flashcards. Reveal answers, mark known or review again, undo choices, shuffle sessions and export reusable JSON/CSV…
Images & DesignFLIF Image ConverterConvert supported still FLIF to PNG, JPEG or WebP and create pixel-verified lossless FLIF from images locally, with preview and transparency.
Everyday CalculatorsFlooring Material CalculatorEstimate floor area, waste allowance and the number of flooring packs to buy.
Developer & DataFluid Typography BuilderBuild eight responsive text sizes together. Preview their calculated sizes and export reusable CSS variables for your website.
Everyday CalculatorsFocus Timer, Countdown & StopwatchUse a large focus timer with short and long breaks, quick countdown presets, a stopwatch with laps and downloadable local session reports.
Developer & DataFont Explorer & Conversion WorkbenchPreview local fonts, compare typography, explore Unicode characters and variable axes, inspect font metadata and export supported font containers…
ConvertersForce ConverterCompare force in newtons, pound-force, kilogram-force and cgs units.
Passwords & GeneratorsFractal & L-System GeneratorDraw fractal trees, ferns, Koch snowflakes, dendrites, Hilbert curves and Sierpinski triangles. Explore iterations and angles, write custom…
Everyday CalculatorsFraction CalculatorAdd, subtract, multiply or divide two fractions and see the exact simplified result.
Everyday CalculatorsFreezer Batch Portion PlannerDivide a prepared batch into equal containers and estimate freezer volume.
ConvertersFrequency ConverterConvert oscillation rates and cycles-per-minute values with clear frequency units.
Audio & VideoFrequency to MIDI Note CalculatorFind the nearest equal-tempered MIDI pitch and its tuning difference.
Everyday CalculatorsFuel Efficiency CalculatorCalculate fuel economy from a measured distance and fuel used.
Everyday CalculatorsGarden Bed Soil CalculatorEstimate soil volume for a rectangular raised bed and bags to buy.
Everyday CalculatorsGeometric Sequence CalculatorFind a term and finite sum of a constant-ratio sequence.
Images & DesignGIF Background RemoverRemove a matching background color from every frame. Protect enclosed regions with edge-connected removal and export transparent GIF or full-color…
GIF & AnimationGIF Color EditorAdjust brightness, contrast, saturation and hue with a live preview. Keep transparency and export GIF, full-color APNG or PNG frames.
GIF & AnimationGIF Comment EditorRead, add or remove embedded GIF comments while preserving compressed frame images for metadata-only edits.
GIF & AnimationGIF Comparison ViewerCompare two GIF animations with paired previews, synchronized playback, shared scrubbing and nearby tabbed controls. Export a reference PNG or…
GIF & AnimationGIF Contact Sheet MakerCreate a labeled PNG overview of GIF frames. Choose frames, columns, cell dimensions, spacing and background while inspecting the animation.
GIF & AnimationGIF Crop & ResizeCrop directly on the preview, resize with linked proportions, rotate or flip. Choose crisp pixel scaling or smooth resizing and inspect export…
GIF & AnimationGIF Frame ExtractorInspect composited GIF frames and export a PNG, a full frame ZIP with timings or a sprite sheet.
GIF & AnimationGIF Frame Timing ReportInspect stored frame delays, browser playback estimates and cumulative start times. Export a complete CSV or JSON timing report.
GIF & AnimationGIF Frame ViewerExplore an animation frame by frame with zoom, timing, playback and onion-skin comparison. Save a full-color reference frame when you need it.
GIF & AnimationGIF Loop EditorSet a GIF to play once, repeat forever or play a chosen number of times. Loop-only edits preserve compressed frame images.
GIF & AnimationGIF OptimizerCompare measured output size, optimize changed pixels or deliberately reduce colors. Quality-first settings are the default, with clear reduction…
GIF & AnimationGIF Palette InspectorInspect the displayed colors of each animation frame, see pixel counts and export a complete palette report.
GIF & AnimationGIF ReverseReverse an animation or create a forward-and-backward loop. Inspect the frame timeline and export with exact colors whenever GIF can represent them.
GIF & AnimationGIF Speed ChangerChange the pace of an animation, set frame durations and preview the result. Timing-only exports retain the original compressed images.
GIF & AnimationGIF SplitterSelect a frame range, trim an animation or download full-color PNG frames with a timing manifest.
GIF & AnimationGIF Text EditorAdd draggable text layers, meme captions, outlines, opacity and frame ranges. Preview animated captions before exporting.
GIF & AnimationGIF to CSS Sprite ConverterTurn animation frames into a PNG atlas with CSS frame positions and a JSON timing manifest, ready for a web project.
GIF & AnimationGIF to Video ConverterConvert a GIF into MP4, WebM, full-color APNG or PNG frames using a live preview, visual frame timeline, trim controls and tabbed export settings.
GIF & AnimationGIF Watermark ToolAdd a logo or a text credit, control opacity and rotation, repeat a mark or limit it to a frame range. Preview the animation before downloading.
Everyday CalculatorsGift Ribbon Length PlannerEstimate two perpendicular ribbon loops around a rectangular box.
Developer & DataGIS & Map Data WorkbenchInspect and edit offline map layers from GeoJSON, GPX, KML, coordinate CSV and supported shapefile ZIPs. Measure features, simplify lines and…
Developer & DataGit Patch InspectorReview changed files, additions, deletions, hunks and binary markers without applying a Git patch.
Everyday CalculatorsGPA CalculatorCalculate a credit-weighted GPA using the grade points from your own institution.
Everyday CalculatorsGravel Mass CalculatorEstimate aggregate mass from area, depth and your supplied bulk density.
Everyday CalculatorsGravitational Potential Energy CalculatorEstimate energy change when raising a mass in constant gravity.
Developer & DataGrid Path Distance CalculatorCompare Manhattan, diagonal-grid and straight-line distance between grid cells.
Developer & DataGZIP File Compressor & DecompressorCompress files into GZIP or decompress a GZIP stream with output limits and a size report.
Developer & DataHAR Network AnalyzerInspect a local HAR capture with request filters, timing waterfalls, status and domain summaries, request details, CSV exports and a minimized…
Developer & DataHash Collision Probability EstimatorEstimate the birthday-bound collision probability for random uniform hashes.
ConvertersHeat Flux ConverterConvert thermal power per area with explicit area-unit changes.
Everyday CalculatorsHemisphere CalculatorMeasure a half-sphere’s capacity and surface with and without its base.
Developer & DataHex Encoding Size EstimatorPlan hex representation length with optional separators.
Developer & DataHex File Inspector & Byte ViewerInspect file bytes locally with hex/ASCII paging, exact byte searches, range extraction, text decoding, endian-aware integer/float values and byte…
Developer & DataHex to Image ConverterDecode hexadecimal PNG, JPEG or WebP file bytes, or build an image from raw RGB, RGBA or grayscale pixel bytes. Preview locally and export PNG.
Everyday CalculatorsHollow Cylinder CalculatorMeasure tube material volume and internal capacity.
Everyday CalculatorsHousehold Budget PlannerCompare monthly household income with grouped expenses and a savings target.
Developer & DataHTML Entity Encoder & DecoderEncode HTML special characters, escape non-ASCII text or encode every code point. Decode semicolon-terminated named and numeric character…
Developer & DataHTML Form Accessibility InspectorInspect form controls for label associations, broken ARIA references, duplicate IDs and missing names.
Developer & DataHTML Heading Outline InspectorExtract a readable h1–h6 outline from pasted HTML. Review skipped levels, empty headings, duplicate IDs and main-content scope, with text, JSON…
Developer & DataHTML Link ExtractorExtract anchor links from pasted HTML, resolve relative URLs with a base, filter same-origin or external links and export text, attributes and…
Developer & DataHTML Minifier & BeautifierMinify or beautify HTML locally with parser-based processing, protected script and preformatted content, byte-size statistics and a sanitized…
Text & WritingHTML Table GeneratorGenerate styled responsive HTML tables from CSV or spreadsheet cells. Preview semantic captions/headers, numeric alignment and RTL, then export…
Developer & DataHTTP Cache-Control Builder & InspectorDraft response cache policies or inspect an existing Cache-Control value, with browser/shared TTLs, validation rules, immutable content, stale…
Developer & DataHTTP Cookie InspectorInspect pasted Set-Cookie fields, domain and path scope, lifetime, cookie prefixes and attribute conflicts. Masked JSON and CSV reports help…
Developer & DataHTTP Header Inspector & CompareInspect HTTP header blocks, preserve repeated fields, compare two captures, mask credential-like values and export a readable report locally.
Developer & DataHTTP Request & cURL BuilderBuild reviewable cURL commands or portable config drafts from a JSON request definition, with repeated query parameters, headers, text or exact…
Everyday CalculatorsHydrostatic Pressure CalculatorEstimate fluid pressure at a depth beneath an open surface.
Everyday CalculatorsICS Calendar Conflict CheckerFind overlaps between explicit calendar events while distinguishing timezone groups and unsupported recurrence.
Everyday CalculatorsIdeal Pendulum Period CalculatorEstimate a simple pendulum’s small-angle period.
ConvertersIlluminance ConverterConvert incident illumination between lux, foot-candles and phot units.
Developer & DataImage ↔ Base64 Converter (Encode & Decode Tool)Encode JPG, PNG, WebP and GIF files as Base64, HTML, CSS or JSON. Preserve original bytes or resize still images; decode and validate raw Base64…
Images & DesignImage Collage & Contact Sheet MakerCreate photo collages and printable contact sheets with ordered images, whole-photo or cropped layouts, filename labels and PNG, JPG, WebP or…
Images & DesignImage Color PickerRead original decoded pixels and create reusable color palettes without uploading images. Includes clear instructions, examples and validated…
Images & DesignImage Color ReplacerReplace image colors locally with click-to-pick, tolerance, soft color edges, lightness preservation and connected-area selection. Compare…
Images & DesignImage Color Vision SimulatorPreview images with approximate protanopia, deuteranopia and tritanopia simulations or grayscale. Compare views locally and export resized PNG…
Images & DesignImage Crop Area CalculatorCalculate retained pixels and area loss for a proposed crop.
Images & DesignImage Crop, Rotate & Edit ToolCrop images at original resolution with exact pixel coordinates, touch selection and undo. Rotate without clipping, flip, frame and export PNG,…
Images & DesignImage Effects ToolEdit still images locally with presets, filters and keyboard or touch before-and-after comparison. Preserve dimensions and download PNG, JPG or…
Images & DesignImage Kaleidoscope MakerCreate mirrored radial patterns from local photos and artwork. Adjust sectors, sample center, zoom and rotation; export full-size PNG or JPG.
Images & DesignImage Pixel Budget PlannerFit image dimensions within a maximum megapixel budget without upscaling.
Images & DesignImage PixelatorPixelate, blur or cover image regions locally. Exact-coordinate selections, undo, multiple shapes and full-resolution PNG, JPG or WebP exports.
Images & DesignImage Splitter & Grid SlicerSplit an image into numbered grid tiles. Keep the full image, center-crop square cells, add optional overlap and download PNG/JPG tiles or a ZIP…
Images & DesignImage to EPS ConverterConvert PNG, JPG and WebP to raster EPS locally. Choose print DPI and transparency background; preview dimensions before download.
PDF ToolsImage to PDF ConverterConvert JPG, PNG and WebP images to PDF locally. Preview page layouts, reorder and rotate images, set paper and margins, then download a combined…
ConvertersInductance ConverterConvert inductance values in henries and electronics prefixes.
Everyday CalculatorsInductor Energy CalculatorCalculate stored magnetic energy for an ideal linear inductor.
Developer & DataINI ↔ JSON ConverterConvert sectioned configuration files to nested JSON and back, with duplicate-key checks and selectable value typing.
Developer & DataIntel HEX ↔ Binary ConverterValidate Intel HEX checksums and address records, reconstruct a bounded binary image or generate HEX records.
Everyday CalculatorsInventory Reorder Point CalculatorPlan a reorder trigger from daily demand, lead time and supplied safety stock.
Everyday CalculatorsInventory Shrinkage CalculatorCompare expected stock with counted stock and estimate the value difference.
Text & WritingInvisible Character InspectorFind hidden Unicode spaces, joiners, direction marks and controls. Preview precise cleanup, normalize optionally and export text or an inspection…
Developer & DataIPv4 & IPv6 Subnet CalculatorCalculate CIDR networks, masks, exact address counts and IPv4 host ranges. Check membership and preview child subnets for IPv4 or IPv6 without…
ConvertersISO Week Date ConverterConvert a calendar date into an ISO week date, or convert a week date back to a calendar day.
Images & DesignIsometric Tile Dimension CalculatorCalculate a 2:1 diamond tile’s dimensions and planar area.
Developer & DataJava Properties ↔ JSON ConverterConvert Java-style properties with continuation lines, escaped separators and Unicode escapes.
Developer & DataJavaScript Minifier & BeautifierMinify or beautify JavaScript locally with parser-based processing, syntax feedback, optional cleanup, file opening and JS exports. Includes…
Developer & DataJSON CompareCompare two JSON documents by keys and array positions. Find added, removed and changed values with JSON Pointer paths while preserving exact…
Developer & DataJSON Flatten & UnflattenConvert nested JSON into a reversible JSON Pointer path table, edit values, and rebuild objects and arrays while preserving large numbers and…
Developer & DataJSON Pointer ExplorerFind a value using JSON Pointer or URI fragment syntax, browse escaped paths and extract exact JSON without rounding large numbers or changing the…
Text & WritingJSON RedactorPrepare a JSON example for sharing. Mask selected field names or exact paths while preserving large numbers, duplicate keys and array positions.
Developer & DataJSON Schema ValidatorValidate JSON against a local draft-07 schema, inspect instance-pointer errors and check schema structure. Includes local definitions,…
Developer & DataJSON String Escape & UnescapeEscape text as a complete JSON string literal, or decode a quoted JSON string into plain text. Handle quotes, backslashes, tabs, newlines and…
Developer & DataJSON to SQL INSERT GeneratorTurn JSON object arrays into PostgreSQL or SQLite INSERT drafts with exact number tokens, safe literal quoting, batch sizes, missing-value…
Developer & DataJSON to TypeScript ConverterInfer TypeScript types from JSON samples, merge array record shapes and mark missing properties optional. Supports readonly output and…
Developer & DataJSON to YAML & YAML to JSON ConverterConvert JSON and YAML locally with exact numeric digits, readable editors, file opening, alias notes and copy/download. Uses YAML 1.2 core rules…
Developer & DataJSONL / NDJSON ConverterValidate newline-delimited JSON with source-line errors, convert JSONL to a JSON array, or export an array as compact NDJSON without rounding…
Developer & DataJWT DecoderDecode JWT headers and claims, inspect expiry times and copy readable output. Browser-based token inspection with an explicit unverified-signature…
ConvertersKinematic Viscosity ConverterConvert kinematic viscosity without confusing it with density-dependent dynamic viscosity.
Everyday CalculatorsKinetic Energy CalculatorCalculate translational kinetic energy from mass and speed.
Everyday CalculatorsKnitting Gauge CalculatorTranslate a measured stitch and row gauge to a target rectangle.
Images & DesignLabel Sheet Capacity PlannerCount rectangular labels on a sheet with margins and gaps.
Developer & DataLaser Cutting & CNC Design PreflightInspect SVG and supported DXF contours, find open paths and duplicate candidates, assign cut or engrave operations, prepare kerf offsets and…
Everyday CalculatorsLaundry Detergent PlannerEstimate detergent quantity and cost for a set of wash loads.
Images & DesignLayered Photo EditorEdit photos and create designs with layers, masks, brushes, selections, text, shapes and blend modes. Keep edits in a saved project and export…
Everyday CalculatorsLED Series Resistor CalculatorEstimate a series resistor and its dissipation for one LED branch.
Everyday CalculatorsLife Calendar / Memento MoriCreate a personalized weekly or monthly life calendar with a chosen planning horizon, reference date and colors. Download a scalable SVG poster or…
Everyday CalculatorsLine Slope CalculatorFind the slope, intercept and inclination of a line through two points.
Everyday CalculatorsLinear Interpolation CalculatorEstimate a value between two known data points.
Everyday CalculatorsLinear Thermal Expansion CalculatorEstimate length change from temperature change and expansion coefficient.
Text & WritingList Sorter & Duplicate RemoverSort a list, remove repeated lines and tidy surrounding spaces. Preserve the first spelling, use natural numeric order and export the complete result.
Developer & DataLoad Test Ramp PlannerPlan a linear user ramp from starting to target concurrency.
Everyday CalculatorsLoan Repayment CalculatorEstimate a fixed-rate loan payment and review a monthly amortization schedule.
Developer & DataLog File AnalyzerFind errors, filter log levels and inspect repeated messages in pasted plain-text or JSON-line logs.
Developer & DataLog Retention Storage PlannerEstimate log storage with retention and a supplied compression multiplier.
Everyday CalculatorsLong Division CalculatorReview integer long division step by step with quotient and remainder.
Everyday CalculatorsLook-and-Say Sequence ExplorerExplore the look-and-say sequence from your own digit seed. Generate terms, compare lengths and growth, inspect digit counts and export complete…
Text & WritingLorem Ipsum GeneratorCreate bounded placeholder text with exact counts and optional repeatable output. Includes clear instructions, examples and validated output controls.
ConvertersLuminance ConverterConvert surface luminance between nits, stilbs and lambert definitions.
Audio & VideoM3U Playlist EditorInspect ordinary playlists, sort titles, remove repeated paths and export extended M3U.
Images & DesignMacro Extension Magnification CalculatorEstimate extra magnification from an extension tube on a simple lens.
ConvertersMagnetic Flux ConverterConvert magnetic flux in webers, maxwells and SI prefixes.
ConvertersMagnetic Flux Density ConverterConvert magnetic flux density between tesla, gauss and SI prefixes.
Everyday CalculatorsMap Distance CalculatorEstimate the straight-line surface distance and initial bearing between two coordinates.
Text & WritingMarkdown Front Matter EditorInspect or replace YAML front matter while keeping the Markdown body intact.
Text & WritingMarkdown Link AuditorInspect inline and reference links, heading anchors and unsafe schemes in Markdown documents.
Developer & DataMarkdown Table BuilderTurn spreadsheet TSV or CSV into readable Markdown tables with alignment, padding, literal-text escaping and multiline-cell controls. Copy or…
ConvertersMass Flow ConverterConvert mass throughput rates without making assumptions about fluid density.
Everyday CalculatorsMaterial Mass from Density CalculatorCalculate mass and weight from a supplied volume and density.
Everyday CalculatorsMaterial Waste Allowance CalculatorPlan purchase quantity from net demand and a loss fraction of purchased material.
Everyday CalculatorsMechanical Power CalculatorCalculate power from work and duration with energy-unit breakdown.
Text & WritingMeeting Agenda BuilderTurn timed topics into a meeting agenda with start, finish and total duration.
Everyday CalculatorsMeeting Cost CalculatorEstimate the cost of participant time for a meeting, compare role costs and calculate weekly or annual totals for recurring meetings.
Developer & DataMesh Memory EstimatorEstimate raw vertex and index buffer storage for a mesh.
Audio & VideoMIDI Note Frequency CalculatorConvert a MIDI note number to equal-tempered frequency with adjustable concert pitch.
Everyday CalculatorsMomentum & Impulse CalculatorCalculate momentum change and average force over a time interval.
Everyday CalculatorsMonthly Habit TrackerTrack routines in a month grid with day marks, targets, undo and portable JSON projects. Optional explicit browser save, multiple marked months…
Text & WritingMorse Code TranslatorTranslate text and International Morse characters with adjustable audio, WAV downloads, unsupported-character reports and a playable character…
Developer & DataMotorola S-record ↔ Binary ConverterValidate S-record lengths, checksums and address widths, reconstruct binary or produce S1/S2/S3 data records.
Developer & DataMTBF Availability EstimatorEstimate steady-state availability from mean time between failures and repair duration.
Everyday CalculatorsMulch Quantity CalculatorEstimate mulch coverage volume and bags from area and layer depth.
Images & DesignND Filter Shutter CalculatorCalculate shutter duration after adding a neutral-density filter.
Developer & DataNPM Lockfile ExplorerExplore package-lock entries, duplicate installed versions, integrity fields and install-script flags.
Developer & DataNumber Base ConverterConvert exact integers between bases2–36, compare binary/octal/decimal/hex/base36 and inspect signed two’s-complement patterns with little/big…
ConvertersNumber Rounding CalculatorRound a decimal exactly to decimal places or significant figures with an explicit tie rule.
Text & WritingNumbers to Words ConverterConvert numbers to English words with exact large integers and decimals. Supports ordinals, currency wording, US/UK style, batch lines and TXT or…
Developer & DataObject Pool Capacity PlannerEstimate pooled objects from spawn rate and maximum lifetime.
Everyday CalculatorsOhm’s Law CalculatorFind voltage, current, resistance and power from two known electrical quantities.
Developer & DataOpenAPI Explorer & Request BuilderExplore OpenAPI 3.0 and 3.1 JSON or YAML, search endpoints, inspect local references and schemas, edit request parameters and export cURL,…
Developer & DataPackage JSON Dependency CompareCompare dependency ranges across two package.json files and export a section-by-section change report.
Everyday CalculatorsPackage Unit Cost CalculatorCompare landed cost per usable item after rejects and shipping.
Everyday CalculatorsPacking Box Capacity PlannerCount axis-aligned identical boxes in a rectangular space using all six orientations.
Developer & DataPagination Page Count CalculatorPlan page count and the last page size for a dataset.
Everyday CalculatorsPaint Coverage CalculatorEstimate paint for a rectangular room, subtract openings and include extra coats.
Images & DesignPanorama Overlap PlannerEstimate shots for a sweep using field of view and overlap.
Everyday CalculatorsPantry Supply PlannerEstimate how long a household supply will last at a fixed daily use.
Everyday CalculatorsPaper Stack Thickness CalculatorEstimate stack height from sheet count and measured paper thickness.
Everyday CalculatorsPaper Weight EstimatorEstimate total paper mass using area and grammage.
Developer & DataParallel Speedup CalculatorEstimate ideal parallel speedup using Amdahl’s law.
Everyday CalculatorsParallelogram Area CalculatorCalculate the area of a slanted rectangle using perpendicular height.
Developer & DataParticle Emitter Budget PlannerEstimate simultaneous particles and vertex count for quad particles.
Everyday CalculatorsParty Drink Quantity PlannerPlan nonalcoholic drink volume from your own serving assumptions.
Everyday CalculatorsPascal’s Triangle VisualizerGenerate exact Pascal triangle rows and explore odd/even or modular patterns. Inspect a selected row and its sum, then export scalable SVG, PNG or…
Audio & VideoPCM Audio Storage CalculatorEstimate uncompressed audio size from sampling format.
PDF ToolsPDF Accessibility InspectorReview PDF titles, language, page structure, figures, form labels and extracted reading order. Preview pages, record manual findings and export an…
PDF ToolsPDF Attachment ExtractorList files embedded in a PDF, choose attachments and download them in a ZIP without opening their content.
PDF ToolsPDF Booklet MakerArrange PDF pages for folded booklets with A4/Letter sheets, left/right binding, folding groups, automatic blanks and a saved-output preview.
PDF ToolsPDF Interleave CollatorAlternate pages from two PDFs, reverse scanned backs when needed and retain unmatched final pages.
PDF ToolsPDF Margin CropperTrim visible PDF page margins with separate edge controls, page-range selection and an output preview.
Developer & DataPDF Metadata EditorInspect and edit title, author, keywords and dates in a static PDF copy. Clear standard document properties locally and download a metadata report.
PDF ToolsPDF N-up Print LayoutArrange multiple PDF pages on one sheet with grid, spacing, margins and optional cell borders.
PDF ToolsPDF Page Size ConverterPlace PDF pages on A4, Letter, A3 or custom paper, preserve proportions and preview the printable result.
PDF ToolsPDF Page Size InspectorInspect every PDF page’s size, crop box, rotation and paper dimensions in points and millimetres.
PDF ToolsPDF Redaction & VerificationMark private areas, find text candidates and export a flattened PDF with covered pixels replaced. Inspect the output and download a verification…
PDF ToolsPDF to JPG / PNG ConverterConvert selected PDF pages to JPG, PNG or WebP locally. Preview pages, set resolution, preserve image proportions and download individual images…
PDF ToolsPDF WatermarkAdd a text or logo watermark to PDFs locally. Choose pages, opacity, rotation and repeating patterns; preview the saved PDF while preserving…
Images & DesignPDN Preview & Image ConverterOpen supported Paint.NET PDN3 bitmap layers, extract PNGs and create verified single-layer PDN files from images locally.
Developer & DataPEM ↔ DER Container ConverterWrap binary ASN.1 data in a PEM container or decode exactly one PEM block with a label audit.
Everyday CalculatorsPercentage CalculatorFind a percentage of a number, a percentage share, a percentage change or an increase/decrease. See the calculation alongside the result.
Everyday CalculatorsPermutation CalculatorCount ordered selections without replacement.
Everyday CalculatorsPet Food Supply PlannerEstimate supply duration from a feeding amount you already use.
Images & DesignPhoto Wall Grid PlannerPlan the wall space for a regular grid of identical frames.
Images & DesignPhotography Exposure Value CalculatorCalculate exposure value from aperture and shutter duration.
Everyday CalculatorsPi Digit Generator & SearchCalculate up to 10,000 decimal digits of pi locally using exact integer arithmetic. Choose grouping and wrapping, search digit patterns and export…
Images & DesignPicture Frame Border CalculatorCalculate mat and outer frame dimensions around an image.
Images & DesignPixel Art Integer Scale PlannerFit pixel art within a target viewport using whole-number enlargement.
Images & DesignPixel Density CalculatorCalculate display pixel density and physical pixel pitch.
Everyday CalculatorsPizza Dough Ball PlannerPlan dough quantities for a chosen number of equal pizza balls.
Images & DesignPNG Alpha Mask ExtractorExtract PNG transparency as a grayscale mask, view transparent regions or create color and brightness masks. Compare pixels and download a…
Images & DesignPNG Background RemoverRemove a chosen background color from PNG, JPG or WebP with click-to-pick, tolerance and soft-edge controls. Preview transparency, refine edges…
Images & DesignPNG Color Masks & Retro Palette LabFind unique, frequent or rare RGB colors, create hue and multi-color masks, and convert artwork to web-safe or retro palettes with full-size previews.
Images & DesignPNG Color ReplacerReplace a selected PNG color with a new RGB color using click-to-pick and tolerance controls. Keep transparency, compare results, recolor all…
Images & DesignPNG Compressor & Palette LabOptimize decoded PNG pixels without color loss, or reduce colors deliberately. Compare actual size, changed pixels and color error before downloading.
Images & DesignPNG Effects & Procedural GeneratorGenerate gradients, solid colors, checkerboards and color spectra, or create seeded noise, glitch, pixelation, pixel sorting and palette effects…
Images & DesignPNG Gradient GeneratorCreate horizontal or vertical two-color PNG gradients at custom dimensions and opacity. Start from presets, compare backgrounds and export…
Images & DesignPNG Grayscale ConverterConvert PNG, JPG or WebP to grayscale while keeping alpha transparency. Compare the full-size result, create threshold-based black-and-white…
Developer & DataPNG Hidden Data & Repair LabInspect PNG bit planes, embed and recover UTF-8 messages, diagnose structure and repair supported CRC, IEND and trailing-data errors locally.
Images & DesignPNG Inspector & Metadata EditorInspect PNG structure, chunk CRCs, dimensions, bit depth and pixel statistics. Remove text, EXIF and timestamps without re-encoding image data, or…
Images & DesignPNG Metadata RemoverRemove supported PNG text, EXIF and timestamp metadata without recompressing image chunks. Inspect structure and CRCs, download the cleaned PNG…
Images & DesignPNG Noise GeneratorGenerate repeatable grayscale or color noise PNGs with custom dimensions, seeds and opacity. Add noise to an existing image, compare textures and…
Images & DesignPNG Opacity ChangerMake PNG artwork more transparent with percentage presets, live comparison and alpha statistics. Preserve RGB colors, soften edges or flatten onto…
Images & DesignPNG Outline MakerAdd a colored outline to transparent PNG artwork or export just its boundary. Choose 1–3 pixel strokes, refine alpha, recolor the fill and preview…
Images & DesignPNG Pixel Channels & Data ConverterExtract RGB channels, swap channel order and export decoded pixel bytes as RGB, BGR, RGBA or BGRA with a dimension manifest.
Images & DesignPNG PixelatorPixelate PNG, JPG or WebP with adjustable block size, original-size comparison and transparent PNG export. Add retro palette effects, dithering,…
Images & DesignPNG Shapes & Distortion LabCreate transparent circle, star and wavy cutouts; center visible artwork, shift, skew and mirror it, or make whirl, sphere, hexagonal, triangular…
Images & DesignPNG Silhouette MakerTurn visible PNG pixels into a single-color silhouette while keeping transparency. Create black, white or colored icons, clean a plain background,…
Images & DesignPNG Transparency & Alpha WorkbenchRemove a selected color, edit alpha, extract masks, soften edges and flatten transparent images with original-size previews and local PNG exports.
Everyday CalculatorsPoisson Probability CalculatorEstimate exactly k events under a constant-rate Poisson model.
Developer & DataPolling Request Budget CalculatorEstimate request volume generated by repeated polling clients.
Images & DesignPoster Sheet Tiling PlannerEstimate printer sheets for a poster with overlap and printer margins.
ConvertersPower ConverterConvert power ratings between watts, horsepower definitions and BTU per hour.
Images & DesignPPM & PAM Image Conversion WorkbenchConvert PPM P3/P6 and PAM images to PNG, JPG or WebP, or export PNG artwork as portable RGB/RGBA files with local previews.
Developer & DataPresentation MakerBuild slides with text, images, shapes and charts. Arrange objects visually, add speaker notes, save editable projects and export PowerPoint, PDF…
ConvertersPressure ConverterConvert gauge or absolute pressure numbers across SI, imperial and laboratory units without changing the pressure reference.
Everyday CalculatorsPressure from Force CalculatorCalculate average pressure from a perpendicular force and contact area.
Everyday CalculatorsPrime Factorization CalculatorFactor a whole number, list its divisors and review prime status.
Images & DesignPrint Bleed & Trim CalculatorCalculate document size including equal bleed on every edge.
Images & DesignPrint Safe Area CalculatorCalculate the interior safe area after margins from the trim edge.
Images & DesignPrint Size & DPI CalculatorCalculate print size, pixel requirements and effective PPI for photos or artwork. Preview crop/padding, compare paper sizes and calculate a…
Images & DesignPrintable Calendar MakerBuild monthly and yearly Gregorian calendars with custom events, localized labels, week-start choices and A4 or Letter layouts. Download PNG,…
Everyday CalculatorsPrintable Checklist BuilderTurn your tasks into a clean checklist, check items off and print a copy.
Everyday CalculatorsPrintable Invoice BuilderBuild a clean invoice with itemized charges, line discounts, tax and an exportable HTML document.
Text & WritingPrintable Label MakerMake address labels, gift tags and name stickers on editable A4 or Letter sheets. Repeat labels, skip used positions, fit multilingual text and…
Everyday CalculatorsPrintable Weekly Meal PlannerArrange your own meals for the week and group ingredients into a printable shopping list.
Everyday CalculatorsProduction Batch Time PlannerEstimate batch completion using sequential processing and setup time.
Images & DesignProfile Picture MakerCreate profile pictures with draggable positioning, zoom, circular or square shapes, borders, small-avatar previews and transparent PNG size packs.
Everyday CalculatorsProfit Margin & Markup CalculatorCompare profit margin and markup or find a selling price for a target gross margin.
Images & DesignPSD Preview & Image ConverterPreview supported PSD composites, extract bitmap layers as PNG ZIPs, and convert images to verified single-layer PSD files locally.
Developer & DataPunycode & International Domain InspectorConvert international domain names to browser-normalized ASCII and decoded Unicode. Inspect labels, code points, script cues and batch errors…
Everyday CalculatorsQuadratic Equation SolverSolve ax² + bx + c = 0 and review real or complex roots, discriminant and vertex.
Audio & VideoQuarter-Wave Resonator Length CalculatorEstimate the ideal quarter-wave tube length for a target frequency.
Everyday CalculatorsQueue Wait EstimatorEstimate a single-line wait with parallel identical service stations.
Everyday CalculatorsQuilt Square PlannerPlan square patch count and cutting size including seam allowance.
Passwords & GeneratorsRandom Color Palette GeneratorGenerate color palettes with random, analogous or triadic hues and export HEX, RGB, HSL or CSS variables.
Passwords & GeneratorsRandom Date GeneratorSample dates in an inclusive range, exclude weekends, prevent repeats and sort the final list.
Developer & DataRandom ID Space PlannerCalculate possible random identifiers and entropy for an alphabet and length.
Everyday CalculatorsRandom Integer Coordinate GeneratorGenerate bounded integer coordinate pairs for games, geometry and sample data. Allow or prevent duplicates, use repeatable seeds, preview a…
Passwords & GeneratorsRandom IP Address GeneratorGenerate IPv4 test hosts within a prefix or sample IPv6 documentation addresses without contacting a network.
Passwords & GeneratorsRandom MAC Address GeneratorCreate locally administered unicast sample MAC addresses, or supply a custom three-octet prefix.
Everyday CalculatorsRandom Matrix GeneratorGenerate random integer matrices, symmetric matrices, diagonal matrices or identity matrices. Control dimensions and value ranges; export JSON,…
Everyday CalculatorsRandom Number Generator & Dice RollerDraw inclusive-range random integers or roll custom dice with secure browser randomness, unique sampling, totals, frequencies and full…
Everyday CalculatorsRandom Team GeneratorCreate evenly sized random teams with separate leaders, optional entered skill-score balancing, participant swaps, editable team names and…
Everyday CalculatorsRatio CalculatorSimplify a whole-number ratio and scale it to a target total.
Everyday CalculatorsRC Time Constant CalculatorFind the time constant, cutoff and ideal charge times for a resistor-capacitor pair.
Everyday CalculatorsReading Time PlannerEstimate reading time and daily sessions for a book or document.
Everyday CalculatorsRecipe Serving ScalerResize ingredient quantities for more or fewer servings. Read mixed fractions and choose decimal, quarter or eighth quantities.
Everyday CalculatorsRectangular Pyramid CalculatorEstimate a rectangular pyramid’s volume and outer area.
Audio & VideoRectangular Room Axial Mode CalculatorEstimate the first three axial resonance frequencies along one room dimension.
Developer & DataRegex Literal & Wildcard BuilderTurn plain search text or simple star/question-mark wildcards into escaped JavaScript regular expression sources and ready-to-copy constructor code.
Developer & DataRegex TesterTest JavaScript regex patterns with highlighted matches, named capture groups and g/i/m/s/u flags. Local worker timeout, JSON reports, examples…
Everyday CalculatorsRegular Polygon CalculatorCalculate a regular polygon’s area, apothem and perimeter.
Developer & DataRendering Frame Time BudgetPlan available milliseconds per frame and remaining budget after a measured stage.
Everyday CalculatorsReorder Quantity PlannerCalculate a stock top-up to a target number of supply days.
Developer & DataRequest Concurrency EstimatorEstimate in-flight requests at a steady arrival rate and mean latency.
Everyday CalculatorsResin Cast Volume PlannerPlan a rectangular casting’s resin volume and mix masses from supplied density and ratio.
Everyday CalculatorsResistor Color Code CalculatorRead common 4-band and 5-band resistor colors and their tolerance range.
Developer & DataRetry Backoff Budget CalculatorCalculate capped exponential retry delays and total waiting time.
Audio & VideoReverb & Echo MakerAdd room ambience and repeating echoes to audio. Control delay, feedback, damping, effect mix and tail length, then export WAV or MP3.
Text & WritingReverse Text GeneratorReverse text without splitting emoji or combining characters. Includes clear instructions, examples and validated output controls.
Everyday CalculatorsRhombus CalculatorFind diamond area, side length and perimeter from its diagonals.
Everyday CalculatorsRing Area CalculatorMeasure the material area of a flat ring or washer.
Developer & Datarobots.txt GeneratorCreate a robots.txt draft with crawler targeting, excluded paths and an optional sitemap URL. Use allow-all, block-all or custom exclusion presets…
Everyday CalculatorsRoman Numeral ConverterConvert between whole numbers and standard Roman numerals.
Everyday CalculatorsRotational Speed to Rim Velocity CalculatorFind angular speed and rim speed from radius and RPM.
Everyday CalculatorsRound Robin SchedulerMake a league schedule where each participant meets every other participant.
Developer & DataRSS & Atom Feed InspectorReview feed entries, dates, identifiers, summaries and duplicate IDs in RSS 2.0 or Atom XML.
Everyday CalculatorsRunning Pace CalculatorConvert a run distance and finish time into pace, speed and kilometer splits.
Audio & VideoSabine Reverb Time EstimatorEstimate reverberation time using room volume and equivalent absorption.
Everyday CalculatorsSalary ConverterConvert an hourly gross wage into weekly, monthly and yearly earnings.
Everyday CalculatorsSales Tax CalculatorCalculate a tax-inclusive total or separate tax from an inclusive price.
Everyday CalculatorsSavings Goal CalculatorFind the monthly savings needed to reach a target within your timeline.
Everyday CalculatorsScientific CalculatorCalculate powers, roots, trigonometry, logarithms and factorials with degree/radian modes, memory, unrounded answer reuse and temporary history.
ConvertersScientific Notation ConverterConvert decimal or exponential notation into normalized scientific, engineering and plain-decimal forms.
Images & DesignScreen Size & PPI CalculatorFind a display’s pixel density, physical dimensions and pixel size from its diagonal.
Images & DesignScreen Test & Color CheckInspect a display with manual solid colors, gradients, gray steps, checkerboards and line patterns. Includes fullscreen controls and clear…
Developer & DataSeamless Pattern GeneratorCreate repeating dots, checkerboards, stripes, diagonal lines and grids with custom colors and transparency. Export PNG tiles/full images, vector…
Passwords & GeneratorsSecure PIN GeneratorGenerate batches of random numeric PINs with configurable length, leading-zero rules and copy or file export.
Passwords & GeneratorsSecure Token GeneratorCreate cryptographically random hex or URL-safe tokens in batches and review their random-bit count.
Everyday CalculatorsSeed Spacing Grid PlannerEstimate planting positions on an evenly spaced rectangular grid.
Developer & DataSemantic Version & Range TesterSort semantic versions, compare releases against a reference and test npm version ranges. Inspect prerelease gating, build metadata, invalid…
Audio & VideoSemitone Pitch Ratio CalculatorCalculate the frequency multiplier for a pitch shift.
Everyday CalculatorsSensible Heat Energy CalculatorEstimate heat needed for a temperature change without a phase transition.
Images & DesignSewing Pattern Print & AssemblyTile large PDF sewing patterns onto A4 or Letter paper at a chosen scale. Select supported size layers, crop pages, add overlap, calibration…
Everyday CalculatorsShopping List OrganizerGroup a shopping list by aisle and combine repeated identical entries.
Audio & VideoShutter Angle to Exposure CalculatorFind exposure duration from frame rate and shutter angle.
Audio & VideoSignal Crest Factor CalculatorCompare a signal’s supplied peak and RMS amplitudes.
Images & DesignSignature, Logo & Stamp CleanupClean a scanned signature, logo or stamp: remove paper color, recolor ink, trim margins, adjust alpha, thicken strokes and add outlines with…
Developer & DataSitemap XML AuditorFind duplicate URLs, invalid locations, host mismatches and last-modified issues in sitemap XML.
Audio & VideoSlow Motion Duration CalculatorFind clip length when captured frames play at a different rate.
Everyday CalculatorsSoap Mold Capacity CalculatorMeasure rectangular mold capacity and batch mass using a supplied density.
Audio & VideoSong Bar Duration CalculatorPlan musical section duration from bars and time signature.
Audio & VideoSound Wavelength CalculatorFind wavelength at a specified frequency and propagation speed.
ConvertersSpecific Heat Capacity ConverterConvert heat capacity per unit mass using temperature differences, not absolute temperatures.
Everyday CalculatorsSpeech Duration PlannerPlan spoken delivery time with pauses.
Everyday CalculatorsSpeed Distance Time CalculatorSolve for speed, distance or time using kilometers and hours.
Everyday CalculatorsSphere Volume & Surface CalculatorCalculate a sphere’s capacity and exterior area from its radius.
Everyday CalculatorsSpherical Cap CalculatorMeasure a dome’s volume, curved area and base radius.
Everyday CalculatorsSplit Bill & Tip CalculatorSplit a bill, tip and extra charge between friends. Distribute leftover cents so everyone’s shares add up to the total.
Everyday CalculatorsSpring Energy CalculatorCalculate ideal linear spring force and stored energy.
GIF & AnimationSprite Animation Length CalculatorFind animation duration from frame count and playback rate.
Images & DesignSprite Atlas Capacity CalculatorPlan a grid of sprites in a texture with padding around each cell.
Developer & DataSQL Formatter WorkbenchFormat SQL across 21 dialect identifiers with reusable profiles, side-by-side editors, a change view, undo and local multi-file ZIP export.
ConvertersSQL INSERT to CSV ConverterConvert explicit-column SQL INSERT VALUES statements to an editable CSV download without executing SQL.
Developer & DataSQLite Database ExplorerOpen SQLite files locally, browse tables and views, inspect columns, run read-only queries with parameters, explain query plans and export CSV or…
Developer & DataSRT ↔ LRC Lyrics ConverterConvert subtitle cue starts into timed lyrics and rebuild SRT with configurable final-line duration.
Developer & DataSSH Config BuilderCreate OpenSSH host aliases from a form or JSON list with identity paths, ProxyJump aliases, strict host checks, keepalive settings and a…
Images & DesignStamp, Monogram & Badge MakerCreate custom round, oval and rectangular stamps, logo badges, monograms and date stamps with transparent PNG, SVG and reusable project exports.
Everyday CalculatorsStandard Error CalculatorEstimate the standard error of a sample mean from its standard deviation.
Everyday CalculatorsStock Days Cover CalculatorEstimate inventory coverage from average daily demand.
Everyday CalculatorsStorage Bin Volume CalculatorEstimate rectangular storage capacity and usable volume after an allowance.
Developer & DataStructured Data InspectorInspect JSON-LD entities, types, names, IDs and properties from JSON or pasted page markup.
Everyday CalculatorsStudy Session PlannerSplit a study workload into focused sessions with breaks.
Audio & VideoSubtitle Reading Speed CalculatorCheck a subtitle’s character rate and minimum display time.
Text & WritingSubtitle Timing EditorShift SRT and WebVTT subtitles, correct timing drift with two anchors, preview cue changes and export corrected subtitles locally.
Developer & DataSubtitles ↔ CSV ConverterConvert SRT or plain WebVTT cues to editable CSV rows and rebuild timed subtitles from the table.
Everyday CalculatorsSudoku Generator & SolverGenerate a Sudoku with one solution or solve and check a puzzle you already have.
ConvertersSurface Tension ConverterConvert surface tension values between force-per-length unit systems.
Images & DesignSVG Accessibility InspectorInspect SVG names, titles, ARIA references, image descriptions and viewBox metadata without rendering it.
Developer & DataSVG OptimizerOptimize SVG icons and logos locally with SVGO. Compare artwork, preserve viewBox and accessibility, edit source, choose optimization profiles and…
Developer & DataSVG Sprite BuilderCombine SVG icons into a symbol sprite with rewritten IDs and local references. Preview icons and export the sprite, HTML snippets and manifest…
Developer & DataSVG Wave & Section Divider GeneratorCreate smooth or angular section dividers with layered fills, gradients, transparent backgrounds and repeatable seeds. Export SVG, PNG, CSS…
Everyday CalculatorsTank Refill Time CalculatorEstimate refill time using volume and constant flow.
Audio & VideoTarget File Video Bitrate CalculatorEstimate the video bitrate budget for a chosen file-size limit.
Text & WritingTeleprompter & Script ReaderRead scripts in a large adjustable teleprompter with scroll controls, mirror mode, RTL, themes, focus view and local text-file import.
Audio & VideoTempo Stretch Ratio CalculatorCalculate duration change for a tempo conversion.
Developer & DataText Data URI Builder & DecoderBuild Base64 data URIs from UTF-8 text with a custom MIME type, or inspect and decode text data URIs without opening them or executing embedded…
Text & WritingText Encoding ConverterConvert text files between strict UTF-8, UTF-16LE/BE, UTF-32LE/BE and ISO-8859-1. Control BOMs, line endings and inspect encoded bytes locally.
Text & WritingText Line Wrapper & UnwrapperWrap plain text to a chosen line length or repair paragraphs broken across lines. Control indentation, paragraph handling and long words, then…
Text & WritingText List Set OperationsCompare two text lists with intersection, union and directional or symmetric differences. Control case, spaces, Unicode and empty lines, then…
Text & WritingText Shuffle & RepeatShuffle lines, words or Unicode characters, or repeat a text block with custom spacing. Create randomized practice lists and reusable text locally.
Text & WritingText to Image & Quote Card MakerCreate quote cards and text images with ready-made designs, custom sizes, photo backgrounds and transparent PNG exports. Preview locally, then…
Developer & DataTexture Memory CalculatorEstimate uncompressed GPU texture memory with an optional complete mip chain.
ConvertersThermal Conductivity ConverterConvert material thermal conductivity across SI and imperial units.
ConvertersThermal Resistance ConverterConvert total thermal resistance for a component, separate from area-normalized insulation R-values.
Everyday CalculatorsTile Grout Volume EstimatorEstimate grout joint volume for square tiles using a thin-joint approximation.
Developer & DataTile Map Size PlannerCalculate map dimensions and cell count for an orthogonal tile grid.
Everyday CalculatorsTime Duration CalculatorCalculate hours and minutes between two times, including overnight shifts and breaks. Get decimal hours for timesheets too.
Audio & VideoTime-Lapse Capture PlannerPlan frames, interval and capture duration for a time-lapse clip.
Audio & VideoTime-Lapse Interval PlannerFind a capture interval for a desired finished clip duration.
Developer & DataTimezone Working Hours PlannerFind date-specific meeting times across timezones and work schedules. Account for local dates, weekends, overnight shifts and daylight-saving…
ConvertersTorque ConverterConvert torque units while keeping torque distinct from energy despite matching dimensions.
Everyday CalculatorsTorque Lever CalculatorCalculate torque from force, lever length and application angle.
Everyday CalculatorsTorus Volume CalculatorMeasure a doughnut-shaped solid using its major and tube radii.
Everyday CalculatorsTournament Bracket GeneratorCreate a seeded single-elimination bracket with fair automatic bye placement.
Everyday CalculatorsTrapezoid Area CalculatorCalculate the area and midline of a trapezoid with parallel sides.
Everyday CalculatorsTriangle CalculatorSolve a triangle from its three sides, including angles, area, perimeter and heights.
Images & DesignTrim Transparent PNGCrop transparent padding from PNG artwork with an alpha threshold, side-by-side preview and exact output dimensions. Remove a plain background…
Everyday CalculatorsTrip Fuel Cost CalculatorEstimate fuel and shared trip cost in litres or US/Imperial gallons. Add a return trip and include other charges once.
Everyday CalculatorsTruncated Cone CalculatorCalculate capacity and surface for a cone with its tip removed.
Everyday CalculatorsTwo Parallel Resistors CalculatorCalculate equivalent resistance and branch currents for a parallel pair.
Everyday CalculatorsTyping Completion PlannerEstimate how long a typing task takes including breaks.
Text & WritingTyping Speed Test & PracticePractice timed or full-passage typing with live mistakes, current-text accuracy, correct and gross WPM, custom passages and local result downloads.
ConvertersTypography Unit ConverterConvert CSS lengths using configurable font sizes, viewport dimensions and pixels per inch.
Passwords & GeneratorsULID GeneratorGenerate sortable ULIDs, choose a timestamp and compare independent randomness with monotonic batch ordering.
Audio & VideoUncompressed Video Storage CalculatorEstimate raw video storage from resolution, frame rate and bits per pixel.
Text & WritingUnicode Look-Alike & Confusable ExplorerInspect visually similar Unicode characters, compare reference mapping fingerprints and generate Greek or Cyrillic look-alike examples. Includes…
Everyday CalculatorsUnit Price ComparatorCompare prices across pack sizes, multipacks and quantities. Calculate exact unit-price rankings for mass, volume or item counts and export a…
Developer & DataUnix Timestamp ConverterConvert Unix seconds or milliseconds to UTC and local dates, or dates to timestamps. Includes current time, exact millisecond precision, batch…
Developer & DataURL Encoder, Decoder & InspectorEncode or decode URL components, whole URLs and form values locally. Inspect URL parts and repeated query parameters, with raw fields, clear…
Developer & DataURL Query BuilderBuild HTTP/HTTPS URLs with editable query parameters, repeated names and optional rows. Choose space encoding and export the URL or a reusable…
Passwords & GeneratorsUsername GeneratorGenerate themed, unique name ideas within explicit length constraints. Includes clear instructions, examples and validated output controls.
Developer & DataUTF-8 Storage Scenario PlannerEstimate byte length from counts of one-, two-, three- and four-byte code points.
Developer & DataUUID Generator & InspectorGenerate UUIDv4 and UUIDv7 batches locally with secure browser randomness. Copy IDs, export TXT, JSON or CSV, and inspect UUID versions and v7…
Text & WritingvCard Contact CreatorCreate an importable contact card with names, phone, email, organization and website.
Text & WritingvCard Contact MergerCombine contact cards, review duplicate keys and export retained complete vCards.
Everyday CalculatorsVector Dot Product CalculatorCompare two 2D vectors by dot product and angle.
Audio & VideoVideo Bitrate Size EstimatorEstimate file size from video and audio bitrates and duration.
Audio & VideoVideo Compressor & ResizerCreate a smaller video for sharing. Balance resolution, frame rate and quality, then compare the actual output size and appearance.
Audio & VideoVideo Contact Sheet Sample PlannerPlan evenly spaced thumbnail samples within a video interval.
Audio & VideoVideo Cover Crop PlannerCalculate source crop dimensions for filling a target frame without bars.
Audio & VideoVideo Crop & RotateReframe a video for your screen or social post. Crop visually or enter exact pixels, rotate and flip, then export the framing you preview.
Audio & VideoVideo Frame Count PlannerCalculate frame count and actual duration after whole-frame rounding.
Audio & VideoVideo Letterbox PlannerCalculate contain-fit video size and bars in a target canvas.
Audio & VideoVideo Shutter Angle CalculatorTranslate exposure duration and frame rate into shutter angle.
Audio & VideoVideo Subtitle BurnerPut readable captions directly into your video. Open SRT or VTT subtitles, adjust timing and styling, and preview the active captions before…
Audio & VideoVideo Timecode & Frame CalculatorConvert video timecodes, frame counts and seconds with exact fractional rates, drop-frame label checks, frame offsets and exclusive-end clip…
Audio & VideoVideo Title Safe Area PlannerCalculate centered inset dimensions for title-safe framing.
Audio & VideoVideo to Audio ExtractorSave the soundtrack from a video as an audio file. Select the useful moment, choose an audio format and listen before sharing.
Audio & VideoVideo Trimmer & CutterKeep the moments that matter. Set exact cut points, export individual clips or remove a middle section, with optional resizing and audio controls.
Audio & VideoVocoder & Robot Voice MakerTurn speech into a synthesized robot or musical voice with a real filter-bank vocoder, carrier notes, 8–20 bands, envelope controls and local WAV…
Audio & VideoVoice ChangerChange recorded voices locally with 24 character styles, pitch, vocal resonance, breathiness and textures. Compare previews and download WAV or…
Everyday CalculatorsVoltage Divider CalculatorCalculate an unloaded two-resistor voltage divider output.
ConvertersVolumetric Flow ConverterConvert flow ratings across liters, cubic units and US or imperial gallons.
Everyday CalculatorsWallpaper Roll CalculatorEstimate wallpaper rolls by counting full-height strips across multiple walls, including straight pattern repeats, trimming, spare rolls and an…
Everyday CalculatorsWater Use EstimatorEstimate consumption from flow, duration and frequency.
Developer & DataWeb App Manifest InspectorReview web-app names, start URLs, scopes, icons and display settings with resolved paths.
Developer & DataWeb Traffic Bandwidth BudgetEstimate transfer volume from page weight, visits and cache savings.
Text & WritingWebsite Localization WorkbenchReview and edit JSON, CSV, PO and plain-text XLIFF translations. Find missing strings and placeholder mismatches, compare languages and export…
Text & WritingWebsite Migration & Redirect PlannerPlan a website move with old and new URL inventories, suggested page matches, manual redirect approvals, loop and chain checks, page metadata…
Developer & DataWebSocket Message Traffic PlannerEstimate payload bandwidth for a fixed client and message rate.
Everyday CalculatorsWeekly Schedule PlannerCreate a recurring weekly plan, edit activities and detect overlapping times. Export a printable landscape schedule or an editable JSON project.
Everyday CalculatorsWeekly Timesheet CalculatorTotal work shifts, unpaid breaks and gross pay with overnight shift support.
Everyday CalculatorsWeighted Decision MatrixCompare 2–8 choices with weighted criteria and 0–10 ratings. Inspect score contributions, test priorities and export your comparison or reusable…
Passwords & GeneratorsWeighted Random PickerAssign chances, draw with or without replacement and replay the exact sequence using a seed. Review initial odds and export every draw.
Text & WritingWord & Phrase Frequency AnalyzerFind repeated words and phrases in text, inspect counts and percentages, exclude chosen words and export a ranked report locally.
Text & WritingWord CounterFree online word counter that gives you live word, character, sentence, and paragraph stats. Includes advanced tools like compression, filters,…
Text & WritingWord Document BuilderCreate editable Word documents locally with report, letter, resume and meeting templates. Preview headings, lists and tables, choose page settings…
Text & WritingWord List Cleaner & AuditClean a custom vocabulary or word list with Unicode normalization, duplicate removal, length rules and an exportable audit of every row.
Text & WritingWord Search Puzzle MakerCreate a printable word-search puzzle from your own words, with a separate answer key.
Everyday CalculatorsWords to Numbers ConverterConvert English number words into exact digits, including negative values, decimals and large scales. Batch-convert lines and review errors…
Everyday CalculatorsWorld ClockWatch the current time in several cities with timezone labels and UTC offsets.
Everyday CalculatorsWrapping Paper Cut PlannerPlan a wrapping-paper rectangle for a rectangular gift box.
Developer & DataXML Formatter & ValidatorCheck well-formed XML and format element-only content with two or four spaces. Preserve mixed text and xml:space blocks without executing XML content.
Everyday CalculatorsYarn Length EstimatorEstimate yarn demand from a sample’s measured use and finished area.
Everyday CalculatorsZ-Score CalculatorExpress a measurement as standard deviations from the mean.
Text & WritingZalgo Text Generator & CleanerCreate distorted glitch text with adjustable combining marks above, below and through letters. Compare the result, copy it or remove the basic…
Anonymous search counters record result totals, never your search words.