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