Pressure calculator
Fill in what you know and leave the unknown box empty — it works out whichever one is missing. Nothing is uploaded; the arithmetic happens in your browser.
The formula
P = F ÷ A
Where this usually goes wrong
Area in square metres. The same force on a smaller area is a higher pressure — which is why a drawing pin works.
Worked example
700 N over 0.02 m² is 35,000 Pa.
Those numbers are already in the boxes above — press Work it out to see it, then change them for your own.
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