Energy Converter Energy Converter Enter Energy: From Unit: Terajoule (TJ) Gigajoule (GJ) Megajoule (MJ) Kilojoule (kJ) Joule (J) Millijoule (mJ) Microjoule (µJ) Nanojoule (nJ) Picojoule (pJ) Femtojoule (fJ) Attojoule (aJ) Kilowatt-hour (kWh) Watt-hour (Wh) Calorie (cal) Kilocalorie (kcal) Electronvolt (eV) To Unit: Terajoule (TJ) Gigajoule (GJ) Megajoule (MJ) Kilojoule (kJ) Joule (J) Millijoule (mJ) Microjoule (µJ) Nanojoule (nJ) Picojoule (pJ) Femtojoule (fJ) Attojoule (aJ) Kilowatt-hour (kWh) Watt-hour (Wh) Calorie (cal) Kilocalorie (kcal) Electronvolt (eV) Convert