Pressure
Pressure is a measurement of the force a gas exerts on a given area. It is most commonly measured in pounds per square inch (psi), bar, kgf/cm2 or atmospheres. The latter three units are quite similar and can often be used together without conversion.
| Pascal (Pa) |
Bar (bar) |
Technical atmosphere (at) |
Atmosphere (atm) |
Torr (mmHg) |
Pound per square inch (psi) |
|
|---|---|---|---|---|---|---|
1 Pa |
1 N/m² |
10−5 |
10.197×10−6 |
9.8692×10−6 |
7.5006×10−3 |
145.04×10−6 |
1 bar |
100,000 |
106 dyn/cm² |
1.0197 |
0.98692 |
750.06 |
14.504 |
1 at |
98,066.5 |
0.980665 |
1 kgf/cm² |
0.96784 |
735.56 |
14.223 |
1 atm |
101,325 |
1.01325 |
1.0332 |
101,325 Pa |
760 |
14.696 |
1 torr |
133.322 |
1.3332×10−3 |
1.3595×10−3 |
1.3158×10−3 |
1 mmHg |
19.337×10−3 |
1 psi |
6,894.76 |
68.948×10−3 |
70.307×10−3 |
68.046×10−3 |
51.715 |
1 lbf/in² |
