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KJ to kcal Converter (Kilojoules to Kilocalories)

1 kilojoule = 0.2388458966 kilocalories. To convert kJ to kcal, multiply by 0.2388458966, or divide by 4.1868.

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100 kJ = 23.885 kcal

1 kJ
0.2388 kcal
1 kcal
4.1868 kJ
10 kJ
2.3885 kcal
100 kJ
23.8846 kcal

How to convert kJ to kcal

1 kilojoule equals 0.2388458966 kilocalories, so the conversion is a single multiplication.

kcal = kJ × 0.2388458966

Example: 150 kJ × 0.2388458966 = 35.827 kcal.

About the kilojoule and the kilocalorie (food Calorie)

Kilojoule (kJ)

The kilojoule is the metric energy unit printed on food labels in Australia and the EU next to, or instead of, kcal.

Kilocalorie (food Calorie) (kcal)

The kilocalorie is the “Calorie” on food labels. It's roughly the energy needed to warm 1 kg of water by 1 °C.

1 kilojoule in every energy unit

Kilocalories0.2388 kcal
Joules1,000 J
Kilowatt-Hours0.0002778 kWh
Calories238.846 cal
British Thermal Units0.9478 Btu
Watt-Hours0.2778 Wh
Megajoules0.001 MJ
Gigajoules0.000001 GJ
Megawatt-Hours2.778e-7 MWh
Therms (US)0.00000948 thm
Electronvolts6.242e21 eV
Foot-Pounds737.562 ft·lbf
Ergs10,000,000,000 erg
kcal to kJReverse conversionJoules to kcal1 J = 0.0002388 kcalkcal to Joules1 kcal = 4,186.8 J

kJ to kcal FAQ

How many kilocalories are in a kilojoule?

1 kilojoule = 0.2388458966 kilocalories.

How many kilojoules are in a kilocalorie (food Calorie)?

1 kilocalorie (food Calorie) = 4.1868 kilojoules.

How do I convert kJ to kcal?

Use kcal = kJ × 0.2388458966. For example, 10 kJ = 2.388 kcal.

Can I print this kJ to kcal chart?

Yes. Use "Print / Save PDF" next to the converter for a one-page chart, or "Download CSV" to open it in Excel or Google Sheets.