Pressure Unit Converter – bar, psi, kPa, atm, mmHg
Convert pressure units instantly: bar, psi, kPa, atm, mmHg, inHg, torr. Includes vapor pressure and NPSH examples.
Pressure Converter
Pressure Unit Converter
Convert pressure between bar, psi, kPa, atm, mmHg, inHg, and torr with NIST-traceable precision.
Conversion Factors
| Unit | To kPa | From kPa |
|---|---|---|
| bar | × 100 | ÷ 100 |
| psi | × 6.89476 | ÷ 6.89476 |
| atm | × 101.325 | ÷ 101.325 |
| mmHg | × 0.133322 | ÷ 0.133322 |
| inHg | × 3.38639 | ÷ 3.38639 |
| torr | × 0.133322 | ÷ 0.133322 |
Engineering Examples
-
Pump Suction
Tank at 1.5 bar gauge → 251.3 kPa abs -
Vapor Pressure
Water at 80 °C → 47.4 kPa = 355 mmHg = 6.88 psi -
Vacuum Condenser
50 mbar = 5 kPa abs = 37.5 mmHg -
Safety Valve
Set at 10 bar gauge = 11 bar abs = 145 psi
Quick Reference
| kPa | bar | psi | atm | mmHg |
|---|---|---|---|---|
| 101.3 | 1.013 | 14.7 | 1 | 760 |
| 200 | 2 | 29 | 1.97 | 1500 |
| 500 | 5 | 72.5 | 4.93 | 3750 |
Pro Tip: Use kPa absolute for vapor pressure and NPSH calculations.