Pressure converter
Convert between Pa, kPa, bar, psi, atm, mmHg and Torr.
Pressure converter
Convert pressure between pascals (Pa), kilopascals (kPa), bar, pounds per square inch (psi), atmospheres (atm), millimetres of mercury (mmHg) and Torr. Useful for tyres, weather, diving and engineering. It all runs in your browser.
Useful equivalents
1 bar = 100,000 Pa = 100 kPa ≈ 14.5 psi. 1 atm = 101,325 Pa = 1.01325 bar = 760 mmHg. 1 psi ≈ 6,895 Pa. 1 mmHg ≈ 133.3 Pa (and 1 mmHg ≈ 1 Torr).
What it’s for
- Tyres: usually given in psi or bar.
- Weather: atmospheric pressure in hPa (1 hPa = 100 Pa) or mbar.
- Medicine: blood pressure in mmHg.
Frequently asked questions
How many psi in 1 bar? About 14.5 psi.
Is mmHg the same as Torr? Practically yes — they differ by less than 0.000015%.