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Hydrostatic Pressure Calculator

Gauge pressure at depth in a fluid.

Introduction

Hydrostatic Pressure Calculator — Gauge pressure at depth in a fluid. Enter Fluid density (kg/m³), Depth (m), Gravity (m/s²) to get an instant, accurate result.

Formula

Hydrostatic (gauge) pressure is calculated as P = ρ × g × h, where ρ is fluid density, g is gravitational acceleration, and h is the depth below the fluid surface.

Step-by-step

  1. Enter the Fluid density (kg/m³).
  2. Enter the Depth (m).
  3. Enter the Gravity (m/s²).
  4. Click Calculate to see your result instantly.

Real-world example

Example: With Fluid density (kg/m³) = 1000, Depth (m) = 2, Gravity (m/s²) = 9.81, the Hydrostatic Pressure Calculator gives Pressure Pa: 19620.

Frequently Asked Questions

What is gauge pressure?
Gauge pressure is the pressure relative to atmospheric pressure, excluding the contribution of the atmosphere itself. It represents only the pressure due to the weight of the fluid column above a point.
Does the shape of the container matter?
No. Hydrostatic pressure depends only on fluid density, gravity, and depth — not on the shape or width of the container, a principle known as Pascal's principle of hydrostatic equilibrium.
How do I get absolute pressure from this result?
Add standard atmospheric pressure (101,325 Pa) to the hydrostatic pressure result, or use the fluid pressure calculator, which includes this term automatically.
What inputs does the Hydrostatic Pressure Calculator need?
You'll need to provide: Fluid density (kg/m³), Depth (m), Gravity (m/s²). All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Hydrostatic Pressure Calculator?
The Hydrostatic Pressure Calculator applies the formula exactly as calculated — Hydrostatic (gauge) pressure is calculated as P = ρ × g × h, where ρ is fluid density, g is gravitational acceleration, and h is the depth below the fluid surface. — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Hydrostatic Pressure Calculator free to use?
Yes, the Hydrostatic Pressure Calculator is completely free, requires no signup, and runs instantly in your browser.

About the Hydrostatic Pressure Calculator

The Hydrostatic Pressure Calculator uses a real, verifiable formula — Hydrostatic (gauge) pressure is calculated as P = ρ × g × h, where ρ is fluid density, g is gravitational acceleration, and h is the depth below the fluid surface. — so results are accurate every time, not an approximation.