The definition of the calorie above is, strictly speaking, the definition for the “gram calorie”. The definition for the “kilogram calorie” is the amount of energy required to raise the temperature of one kilogram of water by one degree Celsius. The Kilogram calorie is also known as: the large calorie; a food calorie and/or Calorie with a capital C. When calories are used in nutrition, and especially in food labelling, they are, strictly speaking, ‘large calories’, i.e. kilo calories, denoted by kcal as an abbreviation. However, the word kilo is invariably dropped to avoid confusion with
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