Megajoules to Kilocalories converter

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

1 MJ ≈ 239.005736138 kcal
1 kcal = 0.004184 MJ

Formula: kcal ≈ MJ × 239.005736138
MJ = kcal × 0.004184

Definitions: 1 MJ = 1000000 J; 1 kcal = 1000 cal

The megajoule (MJ) is one million joules. It is used for the energy content of fuels and for heating and gas measurements, and one kilowatt-hour equals 3.6 MJ.

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.

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