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