Question: 1 bar equal to how many mmwc?
Answer: The answer is 9.80665E-5. We assume you are converting between bar and water column [millimeter]. You can view more details on each measurement unit: bar or water column [millimeter] The SI derived unit for pressure is the pascal. 1 pascal is equal to 1.0E-5 bar, or 0.10197162129779 water column [millimeter].