Pressure Calculator
Use our pressure calculator to calculate pressure (Pa) from force (N) and area (m²). Includes the pressure formula (force ÷ area), the force-pressure-area equation, and FAQs on how pressure changes with force and area.
What Is Pressure?
Pressure is the amount of force applied per unit area. It describes how concentrated a force is on a surface.
If the same force is applied over a smaller area, pressure increases. If the same force is spread over a larger area, pressure decreases.
In SI units, pressure is measured in pascals (Pa), where 1 Pa equals 1 newton per square meter (1 N/m²).
Pressure Formula
Pressure is force divided by area.
F is force (N) and A is area (m^2).
Useful if you know pressure and area and want force.
Useful if you know force and pressure and want area.
Doubling the area halves the pressure for the same force.
How to Calculate Pressure
- 1
Enter force (F) in newtons (N).
- 2
Enter area (A) in square meters (m²).
- 3
The calculator applies P = F ÷ A to return pressure in pascals (Pa).
Frequently Asked Questions
The equation is P = F/A, where pressure equals force divided by area.
With area held constant, increasing force increases pressure proportionally. Doubling force doubles pressure.
With force held constant, increasing area decreases pressure. Doubling area halves pressure.
Chemistry often uses gas laws (like PV = nRT) for gas pressure. This calculator uses the mechanical definition P = F/A, which is different from gas law calculations.
Pressure is returned in pascals (Pa), which equals N/m² when force is in newtons and area is in square meters.