Gigapascals to centimeters of water converter above calculates how many centimeters of water are in 'X' gigapascals (where 'X' is the number of gigapascals to convert to centimeters of water). In order to convert a value from gigapascals to centimeters of water (from GPa to cmH2O) simply type the number of GPa to be converted to cmH2O and then click on the 'convert' button.