Unit Converter : Energy Get link Facebook X Pinterest Email Other Apps Energy Converter Energy Converter Enter energy value: From unit: Joule (J) Kilojoule (kJ) Watt-hour (Wh) Kilowatt-hour (kWh) Calorie (cal) Kilocalorie (kcal) BTU To unit: Joule (J) Kilojoule (kJ) Watt-hour (Wh) Kilowatt-hour (kWh) Calorie (cal) Kilocalorie (kcal) BTU Result will appear here