Kilojoule to Kilocalorie Converter

Convert kilojoule to kilocalorie instantly.

Standard energy units

joule 100000
calorie 23900.574
kilocalorie 23.901
watt-hour 27.778
kilowatt-hour 0.0278
BTU 94.781

Fun comparisons

apples eaten 🍎~ 0.29
hours of 100W bulb 💡~ 0.28
marathons run 🏃~ 0.03
full car tanks of fuel ~ Less than 0.01

How to convert kilojoule to kilocalorie

Enter your energy value in kilojoule and see the result in kilocalorie instantly. Key reference points: 1 food Calorie equals 1 kcal (4.184 kJ), and 1 kilowatt-hour equals 3600 kJ (860 kcal).

Kilojoule is used on food labels in Australia and many European countries; kilocalorie (kcal) is the food Calorie used in the US and UK. One kilocalorie equals 4.184 kilojoules.

Need the opposite direction? Convert kilocalorie to kilojoule just as easily, or explore all our energy conversions.

Common kilojoule to kilocalorie conversions

Kilojoule (kJ)Kilocalorie (kcal)
10.239006
51.19503
102.39006
255.97514
5011.9503
10023.9006
500119.503
1000239.006

Frequently asked questions

1 kilojoule equals 0.239006 kilocalorie.

Multiply by 0.239006. For example, 5 kJ = 1.19503 kcal.

2092 kilojoules equals approximately 500 kilocalories (food Calories).

1 kilocalorie equals 4.184 kilojoule.

100 kilojoule equals 23.9006 kilocalorie.

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