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Pressure Calculator

Convert between PSI, Bar, Pascal, Atmosphere, and calculate pressure from force and surface area.

Applied force.
Surface area over which force is distributed.
Choose units for force and area.
Pressure (PSI) 10 psi
Pressure (kPa) 68.95 kPa
Pressure (Bar) 0.6895 bar
Atmospheres (atm) 0.6805 atm
Editorial Standard

GetCalcu Methodology & Editorial Standards

Reviewed: September 2026

ISO 80000-4 Quantities and Units (Mechanics) & standard hydrostatic pressure equations.

Reference Sources: GetCalcu Physical Science & Engineering Board

Pressure Units and Force Distribution in Engineering

Pressure is defined as force applied perpendicular to the surface of an object per unit area over which that force is distributed.

Units of Pressure

PSI (pounds per square inch) is commonly used in the United States, while Pascals (Pa), Kilopascals (kPa), and Bar are standard international metric units.

How to Use the Pressure Calculator

  1. 1
    Enter the total force applied.
  2. 2
    Enter the surface contact area.
  3. 3
    Select Imperial or Metric unit mode.
  4. 4
    View pressure in PSI, kPa, Bar, and Atmospheres.

Pressure Calculator Formula

P = F ÷ A

Real-World Worked Examples

These scenarios demonstrate how key input parameters alter your calculation outcome.

Hydraulic Piston

Input: Force: 500 lbf, Area: 5 in²
Result: Pressure = 100 PSI (689.5 kPa)

Frequently Asked Questions

What is 1 atmosphere of pressure in PSI?

One standard atmosphere (atm) at sea level is approximately 14.696 PSI or 101.325 kPa.