Convert inch of water column to megapascal
1 in w.g. = 0.0002490889083 MPa
1 in w.g. = 0.00024909 MPa
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 0.0002490889083 to go from inch of water column to megapascal, 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? megapascal to inch of water column — 1 MPa = 4,014.630787 in w.g..
inch of water column to megapascal — common values
| 1 in w.g. | 0.00024908891 MPa |
| 2 in w.g. | 0.00049817782 MPa |
| 3 in w.g. | 0.00074726672 MPa |
| 5 in w.g. | 0.0012454445 MPa |
| 10 in w.g. | 0.0024908891 MPa |
| 15 in w.g. | 0.0037363336 MPa |
| 20 in w.g. | 0.0049817782 MPa |
| 25 in w.g. | 0.0062272227 MPa |
| 50 in w.g. | 0.012454445 MPa |
| 75 in w.g. | 0.018681668 MPa |
| 100 in w.g. | 0.024908891 MPa |
| 250 in w.g. | 0.062272227 MPa |
| 500 in w.g. | 0.12454445 MPa |
| 1000 in w.g. | 0.24908891 MPa |
Other pressure conversions
Pa → MPakPa → MPabar → MPaatm → MPapsi → MPammHg → MPainHg → MPaft H₂O → MPa