Convert inch of water column to inch of mercury
1 in w.g. = 0.07355591303 inHg
1 in w.g. = 0.073556 inHg
1 in w.g. in every pressure unit
| microbar | 2,490.9 μbar |
| barye | 2,490.9 Ba |
| millitorr | 1,868.3 mTorr |
| pascal | 249.09 Pa |
| millimeter of water column | 25.4 mmH₂O |
| pound per square foot | 5.2023 lb/ft² |
| centimeter of water column | 2.54 cmH₂O |
| hectopascal | 2.4909 hPa |
| millibar | 2.4909 mbar |
| torr | 1.8683 Torr |
| millimeter of mercury | 1.8683 mmHg |
| inch of water column | 1 in w.g. |
| kilopascal | 0.24909 kPa |
| foot of water column | 0.083333 ft H₂O |
| inch of mercury | 0.073556 inHg |
| pound per square inch | 0.036127 psi |
| meter of water column | 0.0254 m H₂O |
| decibar | 0.024909 dbar |
| kilogram-force per square centimeter | 0.00254 kgf/cm² |
| bar | 0.0024909 bar |
| atmosphere | 0.0024583 atm |
| megapascal | 0.00024909 MPa |
| kip per square inch | 0.000036127 ksi |
| gigapascal | 2.4909e-07 GPa |
| million pounds per square inch | 3.6127e-08 Mpsi |
How the conversion works
Multiply by 0.07355591303 to go from inch of water column to inch 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? inch of mercury to inch of water column — 1 inHg = 13.59510009 in w.g..
inch of water column to inch of mercury — common values
| 1 in w.g. | 0.073555913 inHg |
| 2 in w.g. | 0.14711183 inHg |
| 3 in w.g. | 0.22066774 inHg |
| 5 in w.g. | 0.36777957 inHg |
| 10 in w.g. | 0.73555913 inHg |
| 15 in w.g. | 1.1033387 inHg |
| 20 in w.g. | 1.4711183 inHg |
| 25 in w.g. | 1.8388978 inHg |
| 50 in w.g. | 3.6777957 inHg |
| 75 in w.g. | 5.5166935 inHg |
| 100 in w.g. | 7.3555913 inHg |
| 250 in w.g. | 18.388978 inHg |
| 500 in w.g. | 36.777957 inHg |
| 1000 in w.g. | 73.555913 inHg |
Other pressure conversions
Pa → inHgkPa → inHgMPa → inHgbar → inHgatm → inHgpsi → inHgmmHg → inHgft H₂O → inHg