Convert inch of water column to kilopascal
1 in w.g. = 0.2490889083 kPa
1 in w.g. = 0.24909 kPa
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 0.2490889083 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