One electron volt is related to the SI unit of energy as
1 eV = 1.9 x 10-16J
1 eV = 1.6 x 10-19erg
1 eV = 1.6 x 10-19J
1 eV = 1.9 x 10-16 erg
Electron volt (eV) is used to measure energy or threshold energy or work function, The SI unit of energy is joule (J) and 1 eV = 1.6 x 10-19J