Which unit is used to indicate the amount of energy in food

The unit used to indicate the amount of energy in food is Kilocalorie. Kilocalories (Kcal) is used to express the potential amount of energy found in food and can also be indicated by Calories. Kilojoules (Kj) is sometimes used to express food energy although its primary use is it is the unit for energy and work in general. The units refer to the energy produced when the food is completely burnt