Pressure is force spread over an area — this turns a force reading in pounds-force into the resulting pressure in pounds per square inch (psi) once an area is known.
How it works
The force is divided by the area it’s applied over to give pressure — this is the literal definition of psi.
What this does not include
This does not include converting between two already-defined pressure units like bar or kPa — for that, use this site’s bar to psi or kPa to psi converters instead.
How to use this calculator
- Enter the force in pounds-force and the area in square inches it’s applied over.
Frequently asked questions
Why do I need to enter an area?
Because pounds-force and psi measure different things — psi is force divided by area, so no area means no valid pressure can be computed.
What happens if the area is 1 square inch?
Then the psi value equals the force value exactly, since psi is defined as pounds-force per square inch.
Where is this calculation commonly used?
Estimating pressure from a known applied force — for example, a hydraulic press or a weight resting on a small contact area.
