Calorie

Term	Definition
Calorie	Calorie is a unit of measurement for energy. One calorie is formally defined as the amount of energy required to raise one cubic centimeter of water by one degree centigrade. For the purpose of measuring the amount of energy in food, nutritionists most commonly use kilocalories (equal to 1,000 calories), and label the measurement either as kcal or as Calories with a capital C. One kcal is also equivalent to approximately 4.184 kilojoules. Carbohydrates, fats, protein, and alcohol in the foods and drinks we eat provide food energy or calories. Carbohydrates and proteins provide 4 calories per gram, fat has 9 calories per gram, and alcohol has 7 calories per gram.

Term

Definition

Calorie is a unit of measurement for energy. One calorie is formally defined as the amount of energy required to raise one cubic centimeter of water by one degree centigrade. For the purpose of measuring the amount of energy in food, nutritionists most commonly use kilocalories (equal to 1,000 calories), and label the measurement either as kcal or as Calories with a capital C. One kcal is also equivalent to approximately 4.184 kilojoules. Carbohydrates, fats, protein, and alcohol in the foods and drinks we eat provide food energy or calories. Carbohydrates and proteins provide 4 calories per gram, fat has 9 calories per gram, and alcohol has 7 calories per gram.