Science calculator
Pressure.
Choose force over area or pressure in a liquid. Enter the values you know and leave one blank; this GCSE physics calculator solves the missing quantity.
Pressure P
—
- P pressure · F normal force · A area
- ρ liquid density · g field strength · h vertical depth
Assumptions
- Force is perpendicular to the stated area and distributed uniformly.
- Liquid pressure is gauge pressure above the free surface, not total absolute pressure.
- The liquid is stationary, incompressible and has uniform density.
- Gravitational field strength is uniform, and h is vertical depth below the surface.
How it works
Pressure measures force per unit area. The same force creates more pressure when it acts over a smaller area.
In a liquid, each layer supports the liquid above it. Gauge pressure therefore increases with density, gravitational field strength and vertical depth according to ρgh.
Leave one value blank to rearrange the chosen equation. Inputs are converted to SI internally and displayed to a maximum of three significant figures by default.
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