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Hydraulics
Hydrostatic Pressure
Enter values in the stated units. Example inputs are provided to help you explore the method.
Results
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Method & assumptions
- For a fluid at rest with constant density and gravity: Δp = ρgh.
- Absolute pressure at depth is surface absolute pressure + Δp. The increase is gauge pressure only when the reference is the surface pressure.
- Example: 1000 kg/m³ at 10 m and g = 9.80665 m/s² gives 98,066.5 Pa increase; with 101,325 Pa at the surface, absolute pressure is 199,391.5 Pa.
- Not applicable to a flowing system or a deep gas column with appreciably varying density.
- Source: OpenStax, College Physics 2e §11.4 — https://openstax.org/books/college-physics-2e/pages/11-4-variation-of-pressure-with-depth-in-a-fluid