Convert inch of mercury to foot of water column
1 inHg = 1.132925008 ft H₂O
1 inHg = 1.13 ft H₂O
1 inHg in every pressure unit
| pascal | 3,390 Pa |
| kilopascal | 3.39 kPa |
| megapascal | 0.00339 MPa |
| bar | 0.0339 bar |
| atmosphere | 0.0334 atm |
| millimeter of mercury | 25.4 mmHg |
| pound per square inch | 0.491 psi |
| foot of water column | 1.13 ft H₂O |
| gigapascal | 0.00000339 GPa |
| kip per square inch | 0.000491 ksi |
| inch of mercury | 1 inHg |
| inch of water column | 13.6 in w.g. |
How the conversion works
Multiply by 1.132925008 to go from inch of mercury to foot of water column, 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? foot of water column to inch of mercury — 1 ft H₂O = 0.8826709564 inHg.
inch of mercury to foot of water column — common values
| 1 inHg | 1.132925 ft H₂O |
| 2 inHg | 2.26585 ft H₂O |
| 3 inHg | 3.398775 ft H₂O |
| 5 inHg | 5.664625 ft H₂O |
| 10 inHg | 11.32925 ft H₂O |
| 15 inHg | 16.993875 ft H₂O |
| 20 inHg | 22.6585 ft H₂O |
| 25 inHg | 28.323125 ft H₂O |
| 50 inHg | 56.64625 ft H₂O |
| 75 inHg | 84.969376 ft H₂O |
| 100 inHg | 113.2925 ft H₂O |
| 250 inHg | 283.23125 ft H₂O |
| 500 inHg | 566.4625 ft H₂O |
| 1000 inHg | 1,132.925 ft H₂O |
Other pressure conversions
Pa → ft H₂OkPa → ft H₂OMPa → ft H₂Obar → ft H₂Oatm → ft H₂Opsi → ft H₂OmmHg → ft H₂OinHg → Pa