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Fluid Depth, Density, Gravity & Pressure Calculator

Solve for any variable in the hydrostatic equation P = ρgh.

Last validated: Pending

Fluid Depth Density Gravity Pressure Calculator computes hydrostatic pressure at depth using P = ρgh, useful in scuba diving, engineering, and underwater design. It is useful for well pressure calculations, pipeline hydrostatic testing, and buoyancy analysis. The tool works with custom gravity and density inputs. Use it to verify pressure limits for submersibles, tanks, or wells.

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Input Pattern

Enter values in the left panel, keep units explicit, run the calculation, then copy or share the result. Invalid fields are highlighted immediately.

Fluid Depth, Density, Gravity & Pressure

P = ρgh. Enter any 3 values to solve for the 4th.

Results

Depth: 5.000 m

Density: 1000.00 kg/m³

Gravity: 9.810 m/s²

Pressure:

Pascals: 49050.00

Kilopascals: 49.050

Bar: 0.4905

PSI: 7.114

How to use this tool

Enter fluid density, depth, and gravitational acceleration (default Earth).
Run to compute hydrostatic pressure and equivalent liquid column height.
Compare calculated pressure to rated limits for safety and design verification.

Worked Example

Auto-generated from the tool's current default or entered inputs.

Example Inputs

Depth m: 5.0
Density kg m3: 1000.0
Gravity m s2: 9.81
Pressure pa: 49050.0
Pressure kpa: 49.05
Pressure bar: 0.4905
Pressure psi: 7.114098242723459

Expected Outputs

Depth m: 5
Density kg m3: 1000
Gravity m s2: 9.81
Pressure pa: 49050

Interpretation

Depth m is 5.0. Use this as a decision input, not as a standalone conclusion.
Density kg m3 is 1000.0. Use this as a decision input, not as a standalone conclusion.
Gravity m s2 is 9.81. Use this as a decision input, not as a standalone conclusion.
Cross-check the result against one alternate input set to validate sensitivity.

Scenario Compare (A vs B)

Use this to compare two input sets and quantify change in key outputs.

Scenario A

Depth m

Density kg m3

Gravity m s2

Pressure pa

Pressure kpa

Pressure bar

Pressure psi

Scenario B

Depth m

Density kg m3

Gravity m s2

Pressure pa

Pressure kpa

Pressure bar

Pressure psi

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