Millipascals to centimeters of water converter on this page calculates how many centimeters of water are in 'X' millipascals (where 'X' is the number of millipascals to convert to centimeters of water). In order to convert a value from millipascals to centimeters of water (from mPa to cmH2O) type the number of mPa to be converted to cmH2O and then click on the 'convert' button.