Pressure Converter
Pressure converter: psi, bar, atm, Pa, kPa, MPa, mmHg, Torr and inHg, for tires, gases, weather and vacuum work.
How to use this calculator
- Type the value you want to convert.
- Choose the unit you are converting from and the one you want.
- Read the result, or the full table of equivalent units below.
Convert pressure between SI units (pascal and its multiples), bar, standard atmospheres, millimeters of mercury, torr, psi and inches of mercury.
One standard atmosphere is exactly 101,325 Pa = 760 Torr. A bar (100,000 Pa) is slightly less than an atmosphere. Tire gauges in the US read psi above atmospheric pressure (gauge pressure).
Conversion formula
1 psi = 6.89476 kPa · 1 kPa = 0.145038 psi
Common conversions: pound per square inch → kilopascal
| psi | kPa |
|---|---|
| 1 psi | 6.89476 kPa |
| 2 psi | 13.7895 kPa |
| 5 psi | 34.4738 kPa |
| 10 psi | 68.9476 kPa |
| 20 psi | 137.895 kPa |
| 50 psi | 344.738 kPa |
| 100 psi | 689.476 kPa |
| 1 000 psi | 6 894.76 kPa |
Frequently asked questions
How many psi is 1 bar?
1 bar = 14.5038 psi.
Is mmHg the same as Torr?
Almost: 1 mmHg = 1.000000142 Torr. The difference is negligible outside metrology.