Convert energy
1 kcal = 4.184 kJ
Other common conversions
About the units
- Joules (J) – The joule is the SI unit of energy: the work done by a force of one newton over one metre.
- Kilojoules (kJ)
- Megajoules (MJ)
- Calories (cal) – A calorie is the energy needed to heat one gram of water by one degree. Food "calories" are actually kilocalories.
- Kilocalories (kcal) – The kilocalorie (kcal) is the unit on food labels. 1 kcal = 4.184 kJ.
- Watt-hours (Wh)
- Kilowatt-hours (kWh) – The kilowatt-hour is the unit on your electricity bill: one kilowatt for one hour, i.e. 3.6 megajoules.
- Megawatt-hours (MWh)
- British thermal units (BTU) – The British thermal unit is used in the US for heating and cooling systems.
- Foot-pounds (ft·lb)
- Electronvolts (eV)