Convert inch of water column to kilopascal
1 in w.g. = 0.2490889083 kPa
1 in w.g. = 0.249 kPa
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 0.2490889083 to go from inch of water column to kilopascal, 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? kilopascal to inch of water column — 1 kPa = 4.014630787 in w.g..
inch of water column to kilopascal — common values
| 1 in w.g. | 0.24908891 kPa |
| 2 in w.g. | 0.49817782 kPa |
| 3 in w.g. | 0.74726672 kPa |
| 5 in w.g. | 1.2454445 kPa |
| 10 in w.g. | 2.4908891 kPa |
| 15 in w.g. | 3.7363336 kPa |
| 20 in w.g. | 4.9817782 kPa |
| 25 in w.g. | 6.2272227 kPa |
| 50 in w.g. | 12.454445 kPa |
| 75 in w.g. | 18.681668 kPa |
| 100 in w.g. | 24.908891 kPa |
| 250 in w.g. | 62.272227 kPa |
| 500 in w.g. | 124.54445 kPa |
| 1000 in w.g. | 249.08891 kPa |
Other pressure conversions
Pa → kPaMPa → kPabar → kPaatm → kPapsi → kPammHg → kPainHg → kPaft H₂O → kPa