Kilocalories to Megajoules converter

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

1 kcal = 0.004184 MJ
1 MJ ≈ 239.005736138 kcal

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

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

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