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
microbar1,013,300 μbar
barye1,013,300 Ba
millitorr760,000 mTorr
pascal101,330 Pa
millimeter of water column10,332 mmH₂O
pound per square foot2,116.2 lb/ft²
centimeter of water column1,033.2 cmH₂O
hectopascal1,013.3 hPa
millibar1,013.3 mbar
torr760 Torr
millimeter of mercury760 mmHg
inch of water column406.78 in w.g.
kilopascal101.33 kPa
foot of water column33.899 ft H₂O
inch of mercury29.921 inHg
pound per square inch14.696 psi
meter of water column10.332 m H₂O
decibar10.133 dbar
kilogram-force per square centimeter1.0332 kgf/cm²
bar1.0132 bar
atmosphere1 atm
megapascal0.10132 MPa
kip per square inch0.014696 ksi
gigapascal0.00010132 GPa
million pounds per square inch0.000014696 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 atm33.898539 ft H₂O
2 atm67.797077 ft H₂O
3 atm101.69562 ft H₂O
5 atm169.49269 ft H₂O
10 atm338.98539 ft H₂O
15 atm508.47808 ft H₂O
20 atm677.97077 ft H₂O
25 atm847.46347 ft H₂O
50 atm1,694.9269 ft H₂O
75 atm2,542.3904 ft H₂O
100 atm3,389.8539 ft H₂O
250 atm8,474.6347 ft H₂O
500 atm16,949.269 ft H₂O
1000 atm33,898.539 ft H₂O