Milli-electron volts to kilojoules conversion calculator shown above calculates how many kilojoules are in 'X' milli-electron volts (where 'X' is the number of milli-electron volts to convert to kilojoules). In order to convert a value from milli-electron volts to kilojoules (from meV to kJ) just type the number of meV to be converted to kJ and then click on the 'convert' button.