Kilocalories to Calories converter

To convert kilocalories to calories, enter the value in the first field. The result in calories is calculated automatically using the exact conversion factor.

1 kcal = 1000 cal
1 cal = 0.001 kcal

Formula: cal = kcal × 1000
kcal = cal × 0.001

Definitions: 1 kcal = 1000 cal; 1 cal = 4.184 J

The kilocalorie (kcal) is 1,000 calories, exactly 4,184 joules. It is the unit behind the Calories on food labels and is used for diet and exercise energy, especially in the United States and, next to kilojoules, in many other countries.

The calorie (cal) here is the thermochemical calorie, exactly 4.184 joules, roughly the energy needed to raise one gram of water by one degree Celsius. It is used in chemistry and physics and should not be confused with the food Calorie, which is a kilocalorie.

See the conversion table with commonly used values, handy for quick reference or study.