Kilo joules are used to measure the amount of energy stored in food.
calorie
A kilocalorie is not a measure of weight. It is a measure of energy
Yes. A calorie is just a unit of measure for energy
Traditionally, this was measured in calories, or Calories (equal to 1000 calories - note the uppercase!). But the tendency is to use the official unit of energy - the Joule. This is the same unit that is used to measure any type of energy.
The unit of measure for energy stored in food is typically represented in kilocalories (kcal) or kilojoules (kJ). This energy is derived from the macronutrients in food such as carbohydrates, proteins, and fats, and is used by the body for various functions and activities.
A calorie is a unit of measure for the potenetial energy stored inside of a molecule, or a measure of the amount of energy it takes to raise one gram of water 1 degree celsius.
The unit to measure the Earth's heat is usually expressed in joules (J) or calories (cal). This unit quantifies the amount of thermal energy stored within the Earth's systems such as the lithosphere, atmosphere, and oceans.
The international unit for energy (and work) is the joule.
calorie
All foods 'have' kilojoules. A kilojoule is a measure of the amount of energy they can release when we 'burn' them. (You may be more familiar with calories, which are a different sized unit for the same thing). More exactly, all foods release energy when we use them in respiration, and this energy can be measured in kilojoules.
If you refer to the unit, the international unit for energy is the joule; the symbol is "J".
Kilojoules, often abbreviated as kJ, is a unit of energy used to measure the amount of energy contained in food. It is commonly used on nutrition labels to indicate the energy content of foods and drinks.