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