Convert foot of water column to pound per square inch

1 ft H₂O = 0.4335275011 psi

1 ft H₂O = 0.43353 psi
1 ft H₂O in every pressure unit
microbar29,891 μbar
barye29,891 Ba
millitorr22,420 mTorr
pascal2,989.1 Pa
millimeter of water column304.8 mmH₂O
pound per square foot62.428 lb/ft²
centimeter of water column30.48 cmH₂O
hectopascal29.891 hPa
millibar29.891 mbar
torr22.42 Torr
millimeter of mercury22.42 mmHg
inch of water column12 in w.g.
kilopascal2.9891 kPa
foot of water column1 ft H₂O
inch of mercury0.88267 inHg
pound per square inch0.43353 psi
meter of water column0.3048 m H₂O
decibar0.29891 dbar
kilogram-force per square centimeter0.03048 kgf/cm²
bar0.029891 bar
atmosphere0.0295 atm
megapascal0.0029891 MPa
kip per square inch0.00043353 ksi
gigapascal0.0000029891 GPa
million pounds per square inch4.3353e-07 Mpsi
How the conversion works

Multiply by 0.4335275011 to go from foot of water column to pound per square inch, 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? pound per square inch to foot of water column — 1 psi = 2.306658741 ft H₂O.

foot of water column to pound per square inch — common values
1 ft H₂O0.4335275 psi
2 ft H₂O0.867055 psi
3 ft H₂O1.3005825 psi
5 ft H₂O2.1676375 psi
10 ft H₂O4.335275 psi
15 ft H₂O6.5029125 psi
20 ft H₂O8.67055 psi
25 ft H₂O10.838188 psi
50 ft H₂O21.676375 psi
75 ft H₂O32.514563 psi
100 ft H₂O43.35275 psi
250 ft H₂O108.38188 psi
500 ft H₂O216.76375 psi
1000 ft H₂O433.5275 psi