Convert pressure units

This pressure converter switches between the SI unit (pascal) and everyday and industrial units including bar, psi, atmospheres, millibar, mmHg, and inHg. It is useful for tyre pressures, weather readings, diving, engineering, and science. Type a value, choose your units, and the result appears instantly.

Common pressure conversions

From	To	Result
1 bar	psi	14.50 psi
1 atm	kPa	101.3 kPa
1 psi	kPa	6.895 kPa
1 atm	mmHg	760 mmHg

Tyre pressure: bar vs psi

Car tyre pressures are often given in psi in the US and UK, but in bar across much of Europe. As a rough guide, a typical car tyre at 32 psi is about 2.2 bar. Always follow the pressure recommended in your vehicle’s manual or door-frame sticker.

Frequently asked questions

How many psi in a bar?

One bar equals about 14.5 psi. To convert psi to bar, divide by 14.5.