How to use the hydrostatic pressure calculator
Find pressure at a depth in a fluid. Enter fluid density, depth in the fields above; the gauge pressure, absolute pressure are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- rho — Fluid density (kg/m³)
- h — Depth (m)
Worked example
With fluid density = Sea water, depth = 30 m, the calculator gives gauge pressure ≈ 301.5545 kPa; absolute pressure ≈ 3.976111 atm.
Frequently asked questions
What is the formula for the hydrostatic pressure calculation?
Gauge pressure (kPa) = rho × GRAV × h / 1000. Absolute pressure (atm) = (ATM+rho × GRAV × h) / ATM. Here rho is fluid density (kg/m³), h is depth (m).
What inputs do I need for the hydrostatic pressure calculator?
You need fluid density in kg/m³, depth in m. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.