Convert foot of water column to inch of mercury
1 ft H₂O = 0.8826709564 inHg
1 ft H₂O = 0.883 inHg
1 ft H₂O in every pressure unit
| pascal | 2,990 Pa |
| kilopascal | 2.99 kPa |
| megapascal | 0.00299 MPa |
| bar | 0.0299 bar |
| atmosphere | 0.0295 atm |
| millimeter of mercury | 22.4 mmHg |
| pound per square inch | 0.434 psi |
| foot of water column | 1 ft H₂O |
| gigapascal | 0.00000299 GPa |
| kip per square inch | 0.000434 ksi |
| inch of mercury | 0.883 inHg |
| inch of water column | 12 in w.g. |
How the conversion works
Multiply by 0.8826709564 to go from foot 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 foot of water column — 1 inHg = 1.132925008 ft H₂O.
foot of water column to inch of mercury — common values
| 1 ft H₂O | 0.88267096 inHg |
| 2 ft H₂O | 1.7653419 inHg |
| 3 ft H₂O | 2.6480129 inHg |
| 5 ft H₂O | 4.4133548 inHg |
| 10 ft H₂O | 8.8267096 inHg |
| 15 ft H₂O | 13.240064 inHg |
| 20 ft H₂O | 17.653419 inHg |
| 25 ft H₂O | 22.066774 inHg |
| 50 ft H₂O | 44.133548 inHg |
| 75 ft H₂O | 66.200322 inHg |
| 100 ft H₂O | 88.267096 inHg |
| 250 ft H₂O | 220.66774 inHg |
| 500 ft H₂O | 441.33548 inHg |
| 1000 ft H₂O | 882.67096 inHg |
Other pressure conversions
Pa → inHgkPa → inHgMPa → inHgbar → inHgatm → inHgpsi → inHgmmHg → inHgft H₂O → Pa