Convert inch of water column to millimeter of mercury
1 in w.g. = 1.868320191 mmHg
1 in w.g. = 1.87 mmHg
1 in w.g. in every pressure unit
| pascal | 249 Pa |
| kilopascal | 0.249 kPa |
| megapascal | 0.000249 MPa |
| bar | 0.00249 bar |
| atmosphere | 0.00246 atm |
| millimeter of mercury | 1.87 mmHg |
| pound per square inch | 0.0361 psi |
| foot of water column | 0.0833 ft H₂O |
| gigapascal | 2.49e-07 GPa |
| kip per square inch | 0.0000361 ksi |
| inch of mercury | 0.0736 inHg |
| inch of water column | 1 in w.g. |
How the conversion works
Multiply by 1.868320191 to go from inch of water column to millimeter of mercury, 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? millimeter of mercury to inch of water column — 1 mmHg = 0.5352401611 in w.g..
inch of water column to millimeter of mercury — common values
| 1 in w.g. | 1.8683202 mmHg |
| 2 in w.g. | 3.7366404 mmHg |
| 3 in w.g. | 5.6049606 mmHg |
| 5 in w.g. | 9.341601 mmHg |
| 10 in w.g. | 18.683202 mmHg |
| 15 in w.g. | 28.024803 mmHg |
| 20 in w.g. | 37.366404 mmHg |
| 25 in w.g. | 46.708005 mmHg |
| 50 in w.g. | 93.41601 mmHg |
| 75 in w.g. | 140.12401 mmHg |
| 100 in w.g. | 186.83202 mmHg |
| 250 in w.g. | 467.08005 mmHg |
| 500 in w.g. | 934.1601 mmHg |
| 1000 in w.g. | 1,868.3202 mmHg |
Other pressure conversions
Pa → mmHgkPa → mmHgMPa → mmHgbar → mmHgatm → mmHgpsi → mmHginHg → mmHgft H₂O → mmHg