Convert millimeter of mercury to pascal
1 mmHg = 133.3223874 Pa
sig figs
1 mmHg = 133 Pa
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 133.3223874 to go from millimeter of mercury to pascal, 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? pascal to millimeter of mercury: 1 Pa = 0.007500615758 mmHg.
millimeter of mercury to pascal: common values
| 1 mmHg | 133.32239 Pa |
| 2 mmHg | 266.64477 Pa |
| 3 mmHg | 399.96716 Pa |
| 5 mmHg | 666.61194 Pa |
| 10 mmHg | 1,333.2239 Pa |
| 15 mmHg | 1,999.8358 Pa |
| 20 mmHg | 2,666.4477 Pa |
| 25 mmHg | 3,333.0597 Pa |
| 50 mmHg | 6,666.1194 Pa |
| 75 mmHg | 9,999.1791 Pa |
| 100 mmHg | 13,332.239 Pa |
| 250 mmHg | 33,330.597 Pa |
| 500 mmHg | 66,661.194 Pa |
| 1000 mmHg | 133,322.39 Pa |