Pressure
bartocmH₂O
Convert bar (bar) to centimetres of water column (cmH₂O).
Factor1 bar = 1019.716 cmH₂O
Converter
bar
Accepts numbers or expressions, e.g. 150 + 14.7
Result
cmH₂O
Rendered to 6 significant figures.
Formula
Formula
cmH₂O = bar × 1019.716
Multiply any value in bar by 1019.716 to obtain the value in centimetres of water column.
Worked example
Convert 1 bar to cmH₂O.
- 01Start with 1 bar.
- 02Multiply by the conversion factor: 1 × 1019.716 = 1019.72 cmH₂O.
Result1 bar = 1019.72 cmH₂O
Conversion table
| bar | cmH₂O |
|---|---|
| 1 | 1019.7 |
| 2 | 2039.4 |
| 5 | 5098.6 |
| 10 | 10197 |
| 20 | 20394 |
| 50 | 50986 |
| 100 | 1.0197e+5 |
| 200 | 2.0394e+5 |
| 500 | 5.0986e+5 |
| 1000 | 1.0197e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from bar to cmH₂O?
1 bar equals 1019.716 cmH₂O. To convert, multiply the value in bar by 1019.716.
How do I convert 1 bar to cmH₂O?
1 bar = 1019.72 cmH₂O. For any value, multiply by 1019.716.
How do I convert cmH₂O back to bar?
Divide by the same factor — or equivalently, multiply by 0.000980665. So 1 cmH₂O = 0.000980665 bar.
When would I need to convert bar to centimetre of water column?
Pressure conversions between bar and cmH₂O 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).