Air Pressure Converter
Convert between PSI, bar, kPa, atm, mmHg, and inHg for tire, weather, and HVAC applications.
Type in any field — the others update instantly.
Air pressure is measured in many units depending on the application.
Base unit: Pascal (Pa)
- 1 kPa = 1,000 Pa
- 1 bar = 100,000 Pa = 100 kPa
- 1 atm = 101,325 Pa = 101.325 kPa
- 1 PSI = 6,894.76 Pa = 6.89476 kPa
- 1 mmHg (torr) = 133.322 Pa
- 1 inHg = 3,386.39 Pa
Common conversions:
- 1 atm = 14.696 PSI = 1.01325 bar = 760 mmHg = 29.921 inHg
- 1 bar = 14.504 PSI = 100 kPa
- 1 PSI = 0.06895 bar = 6.895 kPa
Practical applications:
| Application | Typical Range | Common Unit |
|---|---|---|
| Car tires | 30–35 PSI / 2.1–2.4 bar | PSI or bar |
| Bicycle tires | 60–130 PSI / 4–9 bar | PSI or bar |
| Weather reports | 28.5–31 inHg / 965–1050 hPa | inHg or hPa |
| Blood pressure | 80–180 mmHg | mmHg |
| HVAC ducts | 0.05–1 inWG | inches of water |