Free Online Pressure Converter
Free online pressure converter for Pascal, PSI, bar, torr, and kilopascal. Built for engineering, automotive, and science with precise, instant results.
Common Use Cases
- PSI for car tire pressure.
- Bar for scuba and industrial gauges.
- kPa for metric automotive specs.
- Millibar for weather maps.
Understanding the Conversion
Convert pressure units for tires, weather, and engineering: pascal, bar, PSI, kPa, torr, and millibar. Choose a pair below for the exact factor.
Sea-level air pressure is about 101.325 kPa or 14.7 PSI—useful reference for checks.
FAQs
PSI vs bar?
1 bar ≈ 14.5038 PSI. 1 bar is roughly atmospheric pressure at sea level.
What is a pascal?
The SI unit of pressure. 1 kPa = 1,000 Pa; 1 bar = 100 kPa.
Tire pressure in PSI or kPa?
US stickers often use PSI; many other countries use kPa or bar. Convert with the pages below.
mbar and hPa?
They are equal—common on weather reports (e.g. 1013 mbar).