Centimeters of water to pieze conversion calculator shown above calculates how many pieze are in 'X' centimeters of water (where 'X' is the number of centimeters of water to convert to pieze). In order to convert a value from centimeters of water to pieze (from cmH2O to pz) simply type the number of cmH2O to be converted to pz and then click on the 'convert' button.