inH2O to MPa converter
1 inH2O = 0.000249082 MPa
And 1 MPa = 4,014.74 inH2O. Inches of water column to megapascal.
Formula
MPa = inH2O × 0.000249082
A reading of 15 inH2O is 15 × 0.000249082 = 0.00373623 MPa.
inH2O to MPa table
| inH2O | MPa |
|---|---|
| 1 inH2O | 0.000249082 MPa |
| 5 inH2O | 0.00124541 MPa |
| 10 inH2O | 0.00249082 MPa |
| 15 inH2O | 0.00373623 MPa |
| 30 inH2O | 0.00747246 MPa |
| 50 inH2O | 0.0124541 MPa |
| 100 inH2O | 0.0249082 MPa |
| 500 inH2O | 0.124541 MPa |
| 1,000 inH2O | 0.249082 MPa |
MPa to inH2O table
| MPa | inH2O |
|---|---|
| 1 MPa | 4,014.74 inH2O |
| 5 MPa | 20,073.7 inH2O |
| 10 MPa | 40,147.4 inH2O |
| 15 MPa | 60,221.1 inH2O |
| 30 MPa | 120,442 inH2O |
| 50 MPa | 200,737 inH2O |
About these units
inH2O (inches of water column): Low duct and furnace pressures, at the conventional 4 °C water reference.
MPa (megapascal): Standard for material strength, hydraulics and pressure vessels; equal to 1 N/mm².
Gauge pressure (psig, barg) is measured relative to the surrounding atmosphere; absolute pressure (psia, bara) is relative to vacuum. Converting units never changes that reference: absolute = gauge + about 14.696 psi (1.01325 bar) at sea level. Stress uses the same units: 1 MPa = 1 N/mm².
Convert MPa to inH2O instead · All pressure and stress conversions