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