Calculate pressure, force, or area. Free online physics pressure calculator for students and engineers.
A pressure calculator converts between different units of pressure, including Pascals (Pa), bars, atmospheres (atm), pounds per square inch (psi), and millimeters of mercury (mmHg). Pressure is a critical measurement in many fields, from weather forecasting and HVAC systems to automotive engineering and medical applications.
Understanding pressure conversions is essential when working with equipment that uses different measurement standards. Tire pressure might be measured in psi in the US but in bar in Europe. Atmospheric pressure is often reported in millibars by meteorologists but in inches of mercury in some weather reports. This calculator bridges all these units seamlessly.
Standard atmospheric pressure at sea level is 1 atm, which equals 101,325 Pa, 1.01325 bar, 14.696 psi, or 760 mmHg. A car tire inflated to 32 psi equals approximately 2.21 bar or 220.6 kPa.