Convert millimeter of mercury to foot of water column
1 mmHg = 0.04460334676 ft H₂O
1 mmHg = 0.044603 ft H₂O
1 mmHg in every pressure unit
| microbar | 1,333.2 μbar |
| barye | 1,333.2 Ba |
| millitorr | 1,000 mTorr |
| pascal | 133.32 Pa |
| millimeter of water column | 13.595 mmH₂O |
| pound per square foot | 2.7845 lb/ft² |
| centimeter of water column | 1.3595 cmH₂O |
| hectopascal | 1.3332 hPa |
| millibar | 1.3332 mbar |
| torr | 1 Torr |
| millimeter of mercury | 1 mmHg |
| inch of water column | 0.53524 in w.g. |
| kilopascal | 0.13332 kPa |
| foot of water column | 0.044603 ft H₂O |
| inch of mercury | 0.03937 inHg |
| pound per square inch | 0.019337 psi |
| meter of water column | 0.013595 m H₂O |
| decibar | 0.013332 dbar |
| kilogram-force per square centimeter | 0.0013595 kgf/cm² |
| bar | 0.0013332 bar |
| atmosphere | 0.0013158 atm |
| megapascal | 0.00013332 MPa |
| kip per square inch | 0.000019337 ksi |
| gigapascal | 1.3332e-07 GPa |
| million pounds per square inch | 1.9337e-08 Mpsi |
How the conversion works
Multiply by 0.04460334676 to go from millimeter 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 millimeter of mercury — 1 ft H₂O = 22.41984229 mmHg.
millimeter of mercury to foot of water column — common values
| 1 mmHg | 0.044603347 ft H₂O |
| 2 mmHg | 0.089206694 ft H₂O |
| 3 mmHg | 0.13381004 ft H₂O |
| 5 mmHg | 0.22301673 ft H₂O |
| 10 mmHg | 0.44603347 ft H₂O |
| 15 mmHg | 0.6690502 ft H₂O |
| 20 mmHg | 0.89206694 ft H₂O |
| 25 mmHg | 1.1150837 ft H₂O |
| 50 mmHg | 2.2301673 ft H₂O |
| 75 mmHg | 3.345251 ft H₂O |
| 100 mmHg | 4.4603347 ft H₂O |
| 250 mmHg | 11.150837 ft H₂O |
| 500 mmHg | 22.301673 ft H₂O |
| 1000 mmHg | 44.603347 ft H₂O |
Other pressure conversions
Pa → ft H₂OkPa → ft H₂OMPa → ft H₂Obar → ft H₂Oatm → ft H₂Opsi → ft H₂OmmHg → PammHg → kPa