Pressure Units vs. bar
Values below show how much of each unit equals 1 bar (standard gravity; water at 4°C; mercury at 0°C).
| bar → |
mbar | MPa | kPa | hPa | Pa |
kg/cm² | atm | psi |
| 1 bar = |
1000 | 0.1 | 100 | 1000 |
100000 | 1.0197 | 0.9869 | 14.5038 |
| bar → |
mHg | inHg | cmHg | mmHg |
ftH₂O | inH₂O | cmH₂O | mmH₂O |
| 1 bar = |
0.75006 | 29.5300 | 75.0062 | 750.062 |
33.4553 | 401.463 | 1019.72 | 10197.2 |
| bar → |
h2o(eq)(m) | Torr | at | mWS |
Mwg | mmWS | oz/in² |
| 1 bar = |
10.1972 | 750.062 | 1.0197 | 10.1972 |
10.1972 | 10197.2 | 232.060 |
- at: technical atmosphere; 1 at = 1 kg/cm².
- Torr: equivalent to mmHg (1 Torr ≈ 1 mmHg).
- mWS / Mwg / h2o(eq)(m): meters of water column; mmWS = millimeters of water column (same as mmH₂O).
- atm: standard atmosphere (101,325 Pa); bar = 100,000 Pa.
- Mercury/water columns: g = 9.80665 m/s², ρwater = 1000 kg/m³, ρmercury = 13595.1 kg/m³.
