Pressure Converter
1 psi = 0.0689476 bar
About the pressure category
Force per area: tire pressure, weather systems, diving, and hydraulics.
You will reach for these conversions when inflating tires with a gauge in a different unit than the door-sticker spec, or reading weather maps (hPa/mbar) vs US forecasts (inHg).
- A common car tire spec: 2.3 bar, about 33 psi
- Sea-level air pressure averages 1013 hPa, or 29.9 inHg
Popular pressure conversions
Common mistakes
- kPa, hPa, and bar are all metric but differ by factors of 100/1000; car specs are usually bar or kPa
- Absolute vs gauge pressure (psia vs psig): tire gauges read gauge pressure
Frequently asked questions
Which pressure units does this converter support?
7 units: Pascal, Kilopascal, Bar, Atmosphere, PSI, Torr, and more. All conversions run locally in your browser, nothing is sent to a server.
How accurate are the pressure conversions?
All factors follow the official SI definitions and internationally agreed standards. Results are shown with up to 8 significant digits, which is far beyond the precision of everyday measurements.
Is this converter free?
Yes, completely free and unlimited, supported by ads. No app install, no sign-up.