Convert inch of water column to pound per square inch
1 in w.g. = 0.03612729175 psi
1 in w.g. = 0.036127 psi
1 in w.g. in every pressure unit
| microbar | 2,490.9 μbar |
| barye | 2,490.9 Ba |
| millitorr | 1,868.3 mTorr |
| pascal | 249.09 Pa |
| millimeter of water column | 25.4 mmH₂O |
| pound per square foot | 5.2023 lb/ft² |
| centimeter of water column | 2.54 cmH₂O |
| hectopascal | 2.4909 hPa |
| millibar | 2.4909 mbar |
| torr | 1.8683 Torr |
| millimeter of mercury | 1.8683 mmHg |
| inch of water column | 1 in w.g. |
| kilopascal | 0.24909 kPa |
| foot of water column | 0.083333 ft H₂O |
| inch of mercury | 0.073556 inHg |
| pound per square inch | 0.036127 psi |
| meter of water column | 0.0254 m H₂O |
| decibar | 0.024909 dbar |
| kilogram-force per square centimeter | 0.00254 kgf/cm² |
| bar | 0.0024909 bar |
| atmosphere | 0.0024583 atm |
| megapascal | 0.00024909 MPa |
| kip per square inch | 0.000036127 ksi |
| gigapascal | 2.4909e-07 GPa |
| million pounds per square inch | 3.6127e-08 Mpsi |
How the conversion works
Multiply by 0.03612729175 to go from inch 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 inch of water column — 1 psi = 27.6799049 in w.g..
inch of water column to pound per square inch — common values
| 1 in w.g. | 0.036127292 psi |
| 2 in w.g. | 0.072254584 psi |
| 3 in w.g. | 0.10838188 psi |
| 5 in w.g. | 0.18063646 psi |
| 10 in w.g. | 0.36127292 psi |
| 15 in w.g. | 0.54190938 psi |
| 20 in w.g. | 0.72254584 psi |
| 25 in w.g. | 0.90318229 psi |
| 50 in w.g. | 1.8063646 psi |
| 75 in w.g. | 2.7095469 psi |
| 100 in w.g. | 3.6127292 psi |
| 250 in w.g. | 9.0318229 psi |
| 500 in w.g. | 18.063646 psi |
| 1000 in w.g. | 36.127292 psi |
Other pressure conversions
Pa → psikPa → psiMPa → psibar → psiatm → psimmHg → psiinHg → psift H₂O → psi