Atmospheres (standard) to kilopascals conversion calculator shown above calculates how many kilopascals are in 'X' atmospheres (standard) (where 'X' is the number of atmospheres (standard) to convert to kilopascals). In order to convert a value from atmospheres (standard) to kilopascals (from atm to kPa) just type the number of atm to be converted to kPa and then click on the 'convert' button.