Convert millimeter of mercury to bar
1 mmHg = 0.001333223874 bar
sig figs
1 mmHg = 0.00133 bar
1 mmHg in every pressure unit
| microbar | 1,330 μbar |
| barye | 1,330 Ba |
| millitorr | 1,000 mTorr |
| pascal | 133 Pa |
| millimeter of water column | 13.6 mmH₂O |
| pound per square foot | 2.78 lb/ft² |
| centimeter of water column | 1.36 cmH₂O |
| hectopascal | 1.33 hPa |
| millibar | 1.33 mbar |
| torr | 1 Torr |
| millimeter of mercury | 1 mmHg |
| inch of water column | 0.535 in w.g. |
| kilopascal | 0.133 kPa |
| foot of water column | 0.0446 ft H₂O |
| inch of mercury | 0.0394 inHg |
| pound per square inch | 0.0193 psi |
| meter of water column | 0.0136 m H₂O |
| decibar | 0.0133 dbar |
| kilogram-force per square centimeter | 0.00136 kgf/cm² |
| bar | 0.00133 bar |
| atmosphere | 0.00132 atm |
| megapascal | 0.000133 MPa |
| kip per square inch | 0.0000193 ksi |
| gigapascal | 1.33e-07 GPa |
| million pounds per square inch | 1.93e-08 Mpsi |
Worth knowing
millimeter of mercury: The torr and the millimetre of mercury are not identical. The torr is defined as exactly 1/760 of a standard atmosphere, or 133.3223684... Pa, while mmHg is 133.322387415 Pa. They differ by about one part in seven million, which is irrelevant for blood pressure and can matter in precision vacuum metrology. Full definition →
How the conversion works
Multiply by 0.001333223874 to go from millimeter of mercury to bar, or divide by it to go back. Every conversion on this site routes through the SI value (Pa) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? bar to millimeter of mercury: 1 bar = 750.0615758 mmHg.
millimeter of mercury to bar: common values
| 1 mmHg | 0.0013332239 bar |
| 2 mmHg | 0.0026664477 bar |
| 3 mmHg | 0.0039996716 bar |
| 5 mmHg | 0.0066661194 bar |
| 10 mmHg | 0.013332239 bar |
| 15 mmHg | 0.019998358 bar |
| 20 mmHg | 0.026664477 bar |
| 25 mmHg | 0.033330597 bar |
| 50 mmHg | 0.066661194 bar |
| 75 mmHg | 0.099991791 bar |
| 100 mmHg | 0.13332239 bar |
| 250 mmHg | 0.33330597 bar |
| 500 mmHg | 0.66661194 bar |
| 1000 mmHg | 1.3332239 bar |