Convert psi to bar

1 psi = 0.0689476 bar: the formula

To convert psi to bar, divide by 14.5038 or multiply by 0.0689476: bar = psi × 0.0689476. Example: 32 psi, a very common car tire pressure in the US, is 32 × 0.0689476 = 2.21 bar.

The tool above opens on 32 psi to bar. Type your own value in "Value" and the answer follows every keystroke. The "Formula:" line shows the factor, the "In every unit" table adds kPa, kgf/cm² and mmHg, and ⇄ "Swap units" switches to bar to psi.

Psi to bar conversion chart

When you need bar

Driving in Europe

Rental cars in Europe list tire pressure in bar on the door frame or fuel flap, and many gas station air machines are set in bar. Your usual 35 psi is 2.41 bar; most machines step in tenths, so set 2.4.

European parts and gear

Bike pumps, pressure washers and espresso machines made in Europe are rated in bar. A pressure washer sold as 2,000 psi delivers 137.9 bar, and a 130 bar European model is 1,885 psi.

Mental math

Multiply psi by 7 and divide by 100. For 32 psi: 32 × 7 = 224, so about 2.24 bar against 2.21 exactly. The shortcut reads 1.5% high, less than the error of a typical gas station gauge.

Frequently asked questions

Is tire pressure in psi gauge or absolute?

Gauge. Like bar, the reading is the pressure above the surrounding air. A tire at 32 psi actually holds 32 + 14.7 = 46.7 psi absolute. Engineers write psig for gauge and psia for absolute, but tire pressures are always quoted as gauge, in psi and in bar alike.

Should I inflate to the "Max. press." on the sidewall?

No. That number, often 44 or 51 psi, is the most the tire can safely take. The right pressure is the vehicle maker's figure on the door placard or in the owner's manual.

What is 30 psi in bar?

2.07 bar. 36 psi is 2.48 bar.