Convert inch of water column to megapascal
1 in w.g. = 0.0002490889083 MPa
1 in w.g. = 0.000249 MPa
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 0.0002490889083 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