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