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