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