Pressure Converter
Convert any pressure between SI, metric and imperial units used in engineering and meteorology.
From
To
1 psi =
| Pascal | 6,894.757 Pa |
| Kilopascal | 6.894757 kPa |
| Megapascal | 0.006895 MPa |
| Bar | 0.068948 bar |
| Standard atmosphere | 0.068046 atm |
| Millimeter of mercury | 51.715073 mmHg |
| Torr | 51.715073 Torr |
About this calculator
Pressure is force per unit area. The SI unit is the pascal (Pa), equal to one newton per square meter. Because a pascal is very small, practical work uses kilopascals, bar, psi (pounds per square inch) and atmospheres. Meteorology and vacuum work often use mmHg or torr, which are nearly identical.
This converter uses the pascal as its base unit. One bar equals exactly 100,000 Pa, one standard atmosphere equals 101,325 Pa, and one psi equals about 6,894.757 Pa. Both mmHg and torr equal approximately 133.322 Pa.
Frequently asked questions
One bar equals approximately 14.5038 psi.
One standard atmosphere (101,325 Pa) is about 14.6959 psi.
They are very nearly equal; both are about 133.322 Pa, so for most purposes they can be used interchangeably.
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