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