Calorie Conversions

Use this easy and mobile-friendly calculator to convert between Calories and other units of Energy.
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1 Nutritional Calorie =
4.184 Kilojoules
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Calories
A nutritional Calorie, or kilocalorie, is commonly used in food labeling. It is equal to 4.184 kilojoules. The average American consumes about 2,700 kilocalories per day.
Kilojoules
A kilojoule is 1,000 joules. In some countries, food is labeled in kilojoules, much like kilocalories are used in the United States.