Pressure Converter
Convert pressure between Pascal, bar, PSI, atmospheres, torr, and more. Used in engineering, meteorology, medical devices, and everyday tire pressure checks.
Common Pressure Conversions
| From | To |
|---|---|
| 1 bar | 100,000 Pa (100 kPa) |
| 1 atm | 101,325 Pa |
| 1 atm | 14.6959 psi |
| 1 atm | 1.01325 bar |
| 1 psi | 6,894.76 Pa |
| 1 psi | 0.0689476 bar |
| 1 Torr | 133.322 Pa |
| 1 mmHg | 133.322 Pa |
| 1 kPa | 0.145038 psi |
| 1 inHg | 3,386.39 Pa |
Pressure Unit Definitions
- Pascal (Pa)
- The SI unit of pressure = 1 N/m². Named after Blaise Pascal.
- Bar
- 100,000 Pa — close to standard atmospheric pressure.
- Atmosphere (atm)
- 101,325 Pa — average atmospheric pressure at sea level.
- PSI
- Pounds per square inch. Used in the US for tires, hydraulics, and gas.
- Torr / mmHg
- 133.322 Pa. Used in vacuum systems and blood pressure measurement.
Frequently Asked Questions
What is normal atmospheric pressure?
Standard atmospheric pressure is 101,325 Pa = 1 atm = 1.01325 bar = 14.696 psi.
What pressure should my car tires be?
Typical car tire pressure is 30–35 psi (207–241 kPa). Check your vehicle door sticker for the exact recommendation.
What is the difference between bar and PSI?
1 bar = 14.504 psi. Bar is used in Europe while PSI is used in the US for pressure measurements.