Convert inch of water column to pound per square inch
1 in w.g. = 0.03612729175 psi
1 in w.g. = 0.0361 psi
1 in w.g. in every pressure unit
| pascal | 249 Pa |
| kilopascal | 0.249 kPa |
| megapascal | 0.000249 MPa |
| bar | 0.00249 bar |
| atmosphere | 0.00246 atm |
| millimeter of mercury | 1.87 mmHg |
| pound per square inch | 0.0361 psi |
| foot of water column | 0.0833 ft H₂O |
| gigapascal | 2.49e-07 GPa |
| kip per square inch | 0.0000361 ksi |
| inch of mercury | 0.0736 inHg |
| inch of water column | 1 in w.g. |
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