Convert atmosphere to foot of water column
1 atm = 33.8985387 ft H₂O
1 atm = 33.899 ft H₂O
1 atm in every pressure unit
| microbar | 1,013,300 μbar |
| barye | 1,013,300 Ba |
| millitorr | 760,000 mTorr |
| pascal | 101,330 Pa |
| millimeter of water column | 10,332 mmH₂O |
| pound per square foot | 2,116.2 lb/ft² |
| centimeter of water column | 1,033.2 cmH₂O |
| hectopascal | 1,013.3 hPa |
| millibar | 1,013.3 mbar |
| torr | 760 Torr |
| millimeter of mercury | 760 mmHg |
| inch of water column | 406.78 in w.g. |
| kilopascal | 101.33 kPa |
| foot of water column | 33.899 ft H₂O |
| inch of mercury | 29.921 inHg |
| pound per square inch | 14.696 psi |
| meter of water column | 10.332 m H₂O |
| decibar | 10.133 dbar |
| kilogram-force per square centimeter | 1.0332 kgf/cm² |
| bar | 1.0132 bar |
| atmosphere | 1 atm |
| megapascal | 0.10132 MPa |
| kip per square inch | 0.014696 ksi |
| gigapascal | 0.00010132 GPa |
| million pounds per square inch | 0.000014696 Mpsi |
How the conversion works
Multiply by 33.8985387 to go from atmosphere 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 atmosphere — 1 ft H₂O = 0.02949979669 atm.
atmosphere to foot of water column — common values
| 1 atm | 33.898539 ft H₂O |
| 2 atm | 67.797077 ft H₂O |
| 3 atm | 101.69562 ft H₂O |
| 5 atm | 169.49269 ft H₂O |
| 10 atm | 338.98539 ft H₂O |
| 15 atm | 508.47808 ft H₂O |
| 20 atm | 677.97077 ft H₂O |
| 25 atm | 847.46347 ft H₂O |
| 50 atm | 1,694.9269 ft H₂O |
| 75 atm | 2,542.3904 ft H₂O |
| 100 atm | 3,389.8539 ft H₂O |
| 250 atm | 8,474.6347 ft H₂O |
| 500 atm | 16,949.269 ft H₂O |
| 1000 atm | 33,898.539 ft H₂O |
Other pressure conversions
Pa → ft H₂OkPa → ft H₂OMPa → ft H₂Obar → ft H₂Oatm → Paatm → kPaatm → MPaatm → bar