Kilo-electron volts to kilojoules converter above calculates how many kilojoules are in 'X' kilo-electron volts (where 'X' is the number of kilo-electron volts to convert to kilojoules). In order to convert a value from kilo-electron volts to kilojoules (from keV to kJ) type the number of keV to be converted to kJ and then click on the 'convert' button.