Pressure Calculator

What Is a Pressure Calculator?

A Pressure Calculator determines the pressure produced when a force acts over a defined area. The basic relationship between pressure, force and area is P = F ÷ A. This calculator converts the entered force and area into SI units before calculating the pressure in pascals.

Pressure calculations are commonly used in physics, engineering, mechanics, fluid systems, material science and other technical applications. The resulting pressure can also be viewed in several widely used units, including pascals, kilopascals, megapascals, bar, millibar, pounds per square inch and standard atmospheres.

Why Use the Pressure Calculator?

This calculator provides a quick way to calculate pressure from force and area while also providing common pressure-unit conversions.

How to Use the Pressure Calculator

Enter the force applied to a surface and the area over which that force is distributed. The calculator converts the values into compatible SI units before calculating pressure.

1. Enter the force — Enter the applied force and select its unit.
2. Enter the area — Enter the surface area and select its unit.
3. Calculate pressure — Select Calculate Pressure to perform the calculation.
4. Review the result — The calculated pressure is shown in pascals together with several common unit conversions.

Pressure Formula: P = F ÷ A

The standard formula for pressure is P = F ÷ A. In this equation, P represents pressure in pascals, F represents force in newtons and A represents area in square metres. A pascal is equal to one newton per square metre.

For example, if a force of 100 newtons acts evenly over an area of 2 square metres, the pressure is 50 pascals. If the same force is applied over a smaller area, the resulting pressure is higher.

Pressure and Force

Pressure increases when the applied force increases while the area remains constant. For example, doubling the force on the same surface area doubles the pressure.

Pressure and Area

Pressure decreases as the area increases when the applied force remains constant. This inverse relationship is important in mechanical and physical systems where forces are distributed over surfaces.

Pressure Unit Reference

The pascal is the SI unit of pressure. The calculator uses the following relationships for common pressure units.

This calculator determines mechanical pressure from force and area. It does not calculate specialised pressure quantities such as fluid pressure from depth, gas pressure from the ideal gas law, or pressure changes caused by temperature and volume.

For calculations involving real-world equipment or safety-critical systems, the calculated value should be checked against the relevant engineering specifications, measurement data and applicable standards.

Frequently Asked Questions