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Pressure Calculator

Choose average force over an area or hydrostatic pressure from fluid depth, then select units for a clear result.

Ideal average pressure p = F/A or static-fluid gauge pressure Δp = ρgh. Force is assumed evenly distributed across the entered area. Liquid density and gravity are user inputs. Does not model flow, pressure loss, atmospheric pressure, vessel strength or system safety. Not engineering advice; consult a qualified professional for real equipment. Runs locally; no upload.

How do I calculate pressure?

For average pressure, divide the normal force by the contact area. For static liquid pressure, multiply fluid density, gravity and depth. Pick units for the inputs and result. The hydrostatic answer is gauge pressure relative to the fluid surface, not total absolute pressure.

Frequently asked questions

How do I calculate pressure?

For average pressure, divide the normal force by the contact area. For static liquid pressure, multiply fluid density, gravity and depth. Pick units for the inputs and result. The hydrostatic answer is gauge pressure relative to the fluid surface, not total absolute pressure.

Are my measurements uploaded?

No. All calculations run in this browser and the values are not uploaded or saved.

What is the formula for pressure from force and area?

Average pressure is p = F/A: divide a force perpendicular to a surface by its area. The result depends on the assumption that the force is uniformly distributed; this calculator does not find local stress peaks.

How is pressure under a liquid calculated?

For a static fluid with constant density, gauge pressure increase is Δp = ρgh, where density is in kg/m³, gravity in m/s² and depth in metres. It is the increase relative to the surface, not absolute pressure.

What is the difference between gauge and absolute pressure?

Gauge pressure is measured relative to local atmospheric pressure. Absolute pressure includes atmospheric pressure. The hydrostatic result here is only the fluid-column gauge pressure; it does not add atmospheric pressure.