Question: how to convert mm of water to bar?
Answer: The answer is 10197.162129779. We assume you are converting between millimeter water [4 °C] and bar. You can view more details on each measurement unit: mm H2O or bar The SI derived unit for pressure is the pascal. 1 pascal is equal to 0.10197162129779 mm H2O, or 1.0E-5 bar.