Kips per square inch to inches of water converter on this page calculates how many inches of water are in 'X' kips per square inch (where 'X' is the number of kips per square inch to convert to inches of water). In order to convert a value from kips per square inch to inches of water (from ksi to inH2O) type the number of ksi to be converted to inH2O and then click on the 'convert' button.