Pixel Density Calculator
Calculate display pixel density and physical pixel pitch.
Your inputs
Calculation results
Formula & assumptions
PPI = diagonal pixels/diagonal inches.
Values use the specified units. Calculations use floating-point arithmetic. Check input measurements and formula assumptions before applying the result.
Compare your scenarios
Save up to five results to compare changes side by side. Scenarios stay in this tab until you clear or reload it.
Using Pixel Density Calculator
Calculate display pixel density and physical pixel pitch.
- Enter pixel width, pixel height, diagonal using the units printed under each field.
- Choose Calculate, or enable live updates. Review the result labels and formula assumptions.
- Save scenarios to compare up to five variations, then copy the report or download JSON or CSV.
Example
Pixel width: 2560 pixels Pixel height: 1440 pixels Diagonal: 27 inches Pixels per inch: 108.78554 Pixel pitch · millimeters: 0.23348692 Physical width · inches: 23.53254 Physical height · inches: 13.237053
Questions & answers
What does Pixel Density Calculator calculate?
Calculate display pixel density and physical pixel pitch.
Which units should I enter?
Pixel width uses pixels. Pixel height uses pixels. Diagonal uses inches. Convert values to these units before calculating.
Which formula does it use?
PPI = diagonal pixels/diagonal inches.
What does the included example show?
Pixel width: 2560 pixels; Pixel height: 1440 pixels; Diagonal: 27 inches. Result: Pixels per inch = 108.78554; Pixel pitch · millimeters = 0.23348692; Physical width · inches = 23.53254; Physical height · inches = 13.237053.
Can I compare different settings?
Yes. Save a scenario, change the inputs and save another result. Up to five scenarios are compared in this tab; they disappear when you reload or leave.
Can I export the calculation?
Copy the JSON report or download JSON and CSV with inputs, result labels and numeric values. Processing uses local JavaScript; no calculation request is sent to our server. Displayed values use up to 10 significant digits; exports retain JavaScript numeric precision.
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