Bar (bar) to Pounds per square inch (psi)
Convert bar to PSI (pounds per square inch). PSI is the standard for tire pressure at US gas stations and in American vehicle manuals. Bar is common across continental Europe. One bar equals 14.5038 PSI.
Frequently asked questions
1 bar equals 14.5038 PSI. For tire pressure: a recommended inflation of 2.4 bar is equivalent to 34.8 PSI.
Most passenger cars in the US require a tire pressure of 32–36 PSI (2.2–2.5 bar). Always check the sticker on the driver's door jamb or your owner's manual for the exact figure for your vehicle.
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 most often in scientific contexts, imported European equipment, and scuba diving (tank pressure). Most US tools — compressors, pressure washers, tire gauges — are calibrated in PSI.