Pressure
mbartomH₂O
Convert millibars (mbar) to metres of water column (mH₂O).
Factor1 mbar = 0.01019716 mH₂O
Converter
mbar
Accepts numbers or expressions, e.g. 150 + 14.7
Result
mH₂O
Rendered to 6 significant figures.
Formula
Formula
mH₂O = mbar × 0.01019716
Multiply any value in millibars by 0.01019716 to obtain the value in metres of water column.
Worked example
Convert 1000 mbar to mH₂O.
- 01Start with 1000 mbar.
- 02Multiply by the conversion factor: 1000 × 0.01019716 = 10.1972 mH₂O.
Result1000 mbar = 10.1972 mH₂O
Conversion table
| mbar | mH₂O |
|---|---|
| 1 | 0.010197 |
| 2 | 0.020394 |
| 5 | 0.050986 |
| 10 | 0.10197 |
| 20 | 0.20394 |
| 50 | 0.50986 |
| 100 | 1.0197 |
| 200 | 2.0394 |
| 500 | 5.0986 |
| 1000 | 10.197 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from mbar to mH₂O?
1 mbar equals 0.01019716 mH₂O. To convert, multiply the value in millibars by 0.01019716.
How do I convert 1 mbar to mH₂O?
1 mbar = 0.0101972 mH₂O. For any value, multiply by 0.01019716.
How do I convert mH₂O back to mbar?
Divide by the same factor — or equivalently, multiply by 98.0665. So 1 mH₂O = 98.0665 mbar.
When would I need to convert millibar to metre of water column?
Pressure conversions between mbar and mH₂O 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).