Hydrostatic Pressure Calculator
Estimate fluid pressure at a depth beneath an open surface.
Your inputs
Calculation results
Formula & assumptions
Gauge pressure = density × gravity × depth; absolute pressure adds surface pressure.
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 Hydrostatic Pressure Calculator
Estimate fluid pressure at a depth beneath an open surface.
- Enter fluid density, depth, gravity, surface pressure 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
Fluid density: 1000 kilograms per cubic meter Depth: 3 meters Gravity: 9.80665 meters per second squared Surface pressure: 101325 pascals Gauge pressure · pascals: 29419.95 Absolute pressure · pascals: 130744.95 Gauge pressure · bar: 0.2941995
Questions & answers
What does Hydrostatic Pressure Calculator calculate?
Estimate fluid pressure at a depth beneath an open surface.
Which units should I enter?
Fluid density uses kilograms per cubic meter. Depth uses meters. Gravity uses meters per second squared. Surface pressure uses pascals. Convert values to these units before calculating.
Which formula does it use?
Gauge pressure = density × gravity × depth; absolute pressure adds surface pressure.
What does the included example show?
Fluid density: 1000 kilograms per cubic meter; Depth: 3 meters; Gravity: 9.80665 meters per second squared; Surface pressure: 101325 pascals. Result: Gauge pressure · pascals = 29419.95; Absolute pressure · pascals = 130744.95; Gauge pressure · bar = 0.2941995.
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.
Related tools
A useful next step for your task.
Everyday CalculatorsBuoyancy Force CalculatorCalculate buoyant force from displaced volume and fluid density.
Everyday CalculatorsLinear Thermal Expansion CalculatorEstimate length change from temperature change and expansion coefficient.
ConvertersUnit ConverterRecommendedConvert length, mass, temperature, area, volume, speed, time and digital storage. Strict inputs, batch reports and clearly labeled US, imperial…
Everyday Calculators2D Point Distance CalculatorMeasure the straight-line distance and midpoint between coordinates.
Help improve this tool
Report a problem or suggest an improvement
Describe the issue without pasting private tool input. Feedback goes to our admin inbox.