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Pressure

bartomH₂O

Convert bar (bar) to metres of water column (mH₂O).

Factor1 bar = 10.19716 mH₂O

Converter

bar

Accepts numbers or expressions, e.g. 150 + 14.7

Result
10.1972mH₂O

Rendered to 6 significant figures.

Formula

Formula
mH₂O = bar × 10.19716

Multiply any value in bar by 10.19716 to obtain the value in metres of water column.

Worked example

Convert 1 bar to mH₂O.

  1. 01Start with 1 bar.
  2. 02Multiply by the conversion factor: 1 × 10.19716 = 10.1972 mH₂O.
Result1 bar = 10.1972 mH₂O

Conversion table

barmH₂O
110.197
220.394
550.986
10101.97
20203.94
50509.86
1001019.7
2002039.4
5005098.6
100010197

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from bar to mH₂O?
1 bar equals 10.19716 mH₂O. To convert, multiply the value in bar by 10.19716.
How do I convert 1 bar to mH₂O?
1 bar = 10.1972 mH₂O. For any value, multiply by 10.19716.
How do I convert mH₂O back to bar?
Divide by the same factor — or equivalently, multiply by 0.0980665. So 1 mH₂O = 0.0980665 bar.
When would I need to convert bar to metre of water column?
Pressure conversions between bar 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).

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