Pressure Calculator
Calculate pressure from force and area, in pascals, atm, and psi.
Try an example
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About this calculator
How This Pressure Calculator Works
Enter a force and the area it's applied over, and the calculator returns pressure in pascals, atmospheres, and psi.
The Formula
P = F ÷ A — pressure equals force divided by the area it's spread across, measured in pascals when force is in newtons and area is in square meters. The same force concentrated on a smaller area produces much higher pressure — this is why a sharp knife cuts more easily than a dull one, and why snowshoes keep you from sinking by spreading your weight over a larger area.
Worked example
500 newtons spread over 2 square meters produces 250 pascals of pressure — about 0.0025 atmospheres, or 0.036 psi.
Frequently asked questions
What is the formula for pressure?
Pressure equals force divided by the area it's applied over (P = F/A).
Why does the same force produce different pressure?
Because pressure depends on area too — spreading a force over a larger area lowers the pressure, which is why snowshoes work.
What's the difference between pascals, atm, and psi?
They're different units for the same physical quantity — pascals are the SI unit, atm is relative to standard atmospheric pressure, and psi (pounds per square inch) is common in the US.
What's a typical value for atmospheric pressure?
About 101,325 pascals, 1 atm, or 14.7 psi at sea level.