The energy content of foods is commonly given in units of

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The energy content of foods is commonly given in units of kilocalories (kcal) or Calories, which is the amount of energy needed to raise the temperature of 1 kilogram of water by 1 degree Celsius. This unit is more practical than other units such as grams or kilograms, which are measures of weight and not energy. Moles are a unit of measurement in chemistry, and ounces are a unit of weight commonly used in the United States, but neither are commonly used to measure energy content in food.

The Energy Content of Foods Is Commonly Given in Units