Pressure Converter

The Pressure Converter is an online calculation tool that converts between 12 pressure units using the Pascal (Pa) as the base unit from the International System of Units (SI). It supports hectopascals (hPa) used in weather reports, millimeters of mercury (mmHg) often seen in medical contexts, pounds per square inch (psi) used for tire pressure, and bars and kgf/cm² used in industrial applications.

All conversion results are displayed and organized by category for easy comparison across different unit systems. Quick reference buttons enable one-click input of common real-world pressures: standard atmospheric pressure (1 atm), tire pressure (32 psi), weather report pressure (1013 hPa), and vacuum system pressure (10 kPa).

Results are organized into 4 categories: SI units, Customary units, Atmosphere units, and Manometric units, making it easy to find and compare units relevant to your application. For pump and piping checks, use the [Flow Rate Converter](/en/calc/flow-rate-converter/) or [Viscosity Converter](/en/calc/viscosity-converter/) alongside this page. For liquid and material properties, the [Density Converter](/en/calc/density-converter/) can help, and the [Force Converter](/en/calc/force-converter/) is useful when relating pressure and force.