Bar (bar) to Pounds per square inch (psi)
Convert bar to PSI (pounds per square inch). In the UK, tyre pressure is almost always given in PSI at petrol stations. Bar is the standard across much of continental Europe. One bar equals 14.5038 PSI.
Frequently asked questions
1 bar equals 14.5038 PSI. For tyre pressure: a recommended inflation of 2.4 bar is equivalent to 34.8 PSI.
Most passenger cars require a tyre pressure of 30–36 PSI (2.1–2.5 bar), depending on the vehicle and load. Always check the figure in your owner's manual or on the sticker inside the driver's door frame.
Multiply the number of bar by 14.5038. Example: 2.2 bar × 14.5038 = 31.9 PSI. For a quick mental estimate, multiply by 14.5.
Bar appears in industrial settings, scuba diving (tank pressure), brewing, and imported European equipment. PSI remains the everyday standard at UK petrol stations and in car manuals. Always check which unit your pressure gauge is calibrated in before inflating a tyre.