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PSI - Pounds per Square Inch Pressure Unit
Pounds or pound force per square inch (psi or lb/in2) is a widely used British and American unit of measure for pressure. 1 psi equals 6,894.76 Pascals. In the USA the PSI pressure unit is the pimary unit of measure for pressure and almost all pressure intruments are specified and display in pounds per square inch.
The psi is still used extensively in the UK but the bar pressure unit has mostly replaced it as the primary pressure unit.
Use the following conversion factors to convert from PSI to other pressure units or vica versa. To convert a reading in PSI to another unit multiply it by the relevant pressure conversion factor. To convert a reading in any pressure unit to PSI divide it by the relevant pressure conversion factor.
Alternatively convert from a psi pressure value into another unit using the psi conversion table or the pressure unit converter.
PSI Pressure Conversion Factors
| 0.0689476 | bar | |
68.9476 | mbar | |
6894.76 | N/m² | |
6894.76 | Pa | |
68.9476 | hPa | |
6.89476 | kPa | |
0.00689476 | MPa | |
0.0703070 | kgf/cm² | |
703.070 | mmH2O 4°C (39.2°F) | |
70.3070 | cmH2O 4°C (39.2°F) | |
0.703070 | mH2O 4°C (39.2°F) | |
27.6799 | inH2O 4°C (39.2°F) | |
2.30666 | ftH2O 4°C (39.2°F) | |
51.7149 | mmHg 0°C (32°F) | |
5.17149 | cmHg 0°C (32°F) | |
2.03602 | inHg 0°C (32°F) | |
51.7149 | Torr | |
51714.9 | mtorr | |
0.0680460 | atm | |
68947.6 | Dynes/cm² | |
16 | oz/in² | |
51714.9 | µHg 0°C | |
0.000446429 | tfsi (UK) | |
0.000500000 | tfsi (USA) | |
0.0720000 | tfsf (USA) | |
144.000 | psf (USA) | |
70.3070 | gf/cm² |
Pressure Measurement Resource Links
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Site Last Updated: 14/05/08
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