Direct conversion
Convert bar [bar] to millimeter of water [mmH2O] instantly with formula, examples, chart, and FAQs.
1 bar [bar] = 10197.16213 millimeter of water [mmH2O]
1 bar [bar] = 10197.16213 millimeter of water [mmH2O]
Example: 1 bar [bar] equals 10197.16213 millimeter of water [mmH2O].
Pressure conversions use pascal as the reference unit and include common engineering, weather, tire, and laboratory pressure units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-08-14.
The bar is a metric pressure unit equal to 100,000 pascals.
HistoryThe bar was introduced as a convenient pressure unit close to atmospheric pressure.
Current useBars are used for tire pressure, compressors, diving, weather, hydraulics, and industrial gauges.
The millimeter of water (mmH2O) is a pressure unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse millimeter of water when comparing pressure values, checking specifications, converting between systems, or preparing quick estimates.
| bar [bar] | millimeter of water [mmH2O] |
|---|---|
| 1 | 10197.16213 |
| 2 | 20394.32426 |
| 5 | 50985.810649 |
| 10 | 101971.621298 |
| 20 | 203943.242596 |
| 25 | 254929.053244 |
| 50 | 509858.106489 |
| 100 | 1019716.212978 |
| 1000 | 10197162.129779 |
Use this formula: 1 bar [bar] = 10197.16213 millimeter of water [mmH2O] Enter your value in the calculator and the result updates instantly.
1 bar [bar] equals 10197.16213 millimeter of water [mmH2O].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.