Pressure at Depth
Hydrostatic pressure P = ρgh.
Inputs
Results
Pa
301,554
How to Use This Calculator
- Enter fluid density (kg/m3) -- fresh water = 1000, seawater = 1025, mercury = 13600.
- Enter depth (m) below the fluid surface.
- Review hydrostatic pressure in Pa, bar, and psi.
- Add atmospheric pressure (101325 Pa) to get absolute pressure at depth.
- Use for scuba depth planning, submarine design, or pipe pressure calculations.
How the result changes with ρ (kg/m³)
| ρ (kg/m³) | Pa |
|---|---|
| 2,001 | 588,693 |
| 7,001 | 2,059,691 |
| 13,000 | 3,824,594 |
| 18,000 | 5,295,591 |
What each input means
- ρ (kg/m³)
- Seawater ~1025.
- Depth (m)
- Depth below the surface in meters. Deeper = more pressure.
How this is calculated
Formula
P = ρ × g × hRelated Calculators
The questions that sit next to this one — chosen by subject, including calculators filed under a different category.
Tunnel Waterproofing Calculator
Membrane area and injection quantities for tunnel systems.
GemologyGemstone Density Calculator
Calculate specific gravity from hydrostatic weighing (weight in air and water) for gem identification.
Civil EngineeringBeam Load Calculator
Calculate maximum shear, bending moment, and deflection for simply supported and cantilever beams under uniform or point loads.
Civil EngineeringConcrete Mix Design Calculator
Design a concrete mix by specifying target strength, water-cement ratio, and cement content. Get weights for cement, water, fine and coarse aggregates per cubic yard.
Civil EngineeringRebar Spacing Calculator
Calculate rebar spacing, bars per foot, and steel ratio for concrete slabs. Checks ACI code compliance for maximum spacing.
More in Engineering.