Convert inch of water column to bar
1 in w.g. = 0.002490889083 bar
1 in w.g. = 0.0024909 bar
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 0.002490889083 to go from inch of water column to bar, 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? bar to inch of water column — 1 bar = 401.4630787 in w.g..
inch of water column to bar — common values
| 1 in w.g. | 0.0024908891 bar |
| 2 in w.g. | 0.0049817782 bar |
| 3 in w.g. | 0.0074726672 bar |
| 5 in w.g. | 0.012454445 bar |
| 10 in w.g. | 0.024908891 bar |
| 15 in w.g. | 0.037363336 bar |
| 20 in w.g. | 0.049817782 bar |
| 25 in w.g. | 0.062272227 bar |
| 50 in w.g. | 0.12454445 bar |
| 75 in w.g. | 0.18681668 bar |
| 100 in w.g. | 0.24908891 bar |
| 250 in w.g. | 0.62272227 bar |
| 500 in w.g. | 1.2454445 bar |
| 1000 in w.g. | 2.4908891 bar |
Other pressure conversions
Pa → barkPa → barMPa → baratm → barpsi → barmmHg → barinHg → barft H₂O → bar