Pressure
MPatoinH₂O
Convert megapascals (MPa) to inches of water column (4 °C) (inH₂O).
Factor1 MPa = 4014.631 inH₂O
Converter
MPa
Accepts numbers or expressions, e.g. 150 + 14.7
Result
inH₂O
Rendered to 6 significant figures.
Formula
Formula
inH₂O = MPa × 4014.631
Multiply any value in megapascals by 4014.631 to obtain the value in inches of water column (4 °C).
Worked example
Convert 1 MPa to inH₂O.
- 01Start with 1 MPa.
- 02Multiply by the conversion factor: 1 × 4014.631 = 4014.63 inH₂O.
Result1 MPa = 4014.63 inH₂O
Conversion table
| MPa | inH₂O |
|---|---|
| 1 | 4014.6 |
| 2 | 8029.3 |
| 5 | 20073 |
| 10 | 40146 |
| 20 | 80293 |
| 50 | 2.0073e+5 |
| 100 | 4.0146e+5 |
| 200 | 8.0293e+5 |
| 500 | 2.0073e+6 |
| 1000 | 4.0146e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from MPa to inH₂O?
1 MPa equals 4014.631 inH₂O. To convert, multiply the value in megapascals by 4014.631.
How do I convert 1 MPa to inH₂O?
1 MPa = 4014.63 inH₂O. For any value, multiply by 4014.631.
How do I convert inH₂O back to MPa?
Divide by the same factor — or equivalently, multiply by 0.0002490889. So 1 inH₂O = 0.000249089 MPa.
When would I need to convert megapascal to inch of water column (4 °C)?
Pressure conversions between MPa and inH₂O are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).