basic

Hydrostatic Pressure at Depth in a Static Fluid Calculator

P = P₀ + ρgh.

Compute the absolute pressure at depth h in a static fluid: P = P₀ + ρgh, where P₀ is the surface pressure (default 101 325 Pa = 1 atm), ρ is the fluid density (default 1000 kg/m³ for water), and g = 9.80665 m/s². Also computes gauge pressure ΔP = ρgh and equivalent metres of water head.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

m
kg/m³
Pa

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

P = P₀ + ρ·g·h; ΔP = ρgh.

In depth

Compute the absolute pressure at depth h in a static fluid: P = P₀ + ρgh, where P₀ is the surface pressure (default 101 325 Pa = 1 atm), ρ is the fluid density (default 1000 kg/m³ for water), and g = 9.80665 m/s². Also computes gauge pressure ΔP = ρgh and equivalent metres of water head.