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