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Kilojoules to Calories

One kilojoule is 239.0057 calories. Energy units for food, electricity and physics. The "calorie" on a nutrition label is a kilocalorie — 1,000 of the calories used in physics.

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239.0057

1 kilojoule = 239.0057 calories · open this conversion

Formula

calories = kilojoules × 239.005736

A food Calorie (capital C) is a kilocalorie. The thermochemical calorie of 4.184 J is used here.

Kilojoules to Calories table

KilojoulesCalories
1 kJ239.0057 cal
2 kJ478.0115 cal
5 kJ1,195.029 cal
10 kJ2,390.057 cal
20 kJ4,780.115 cal
25 kJ5,975.143 cal
50 kJ11,950.29 cal
100 kJ23,900.57 cal
150 kJ35,850.86 cal
200 kJ47,801.15 cal
250 kJ59,751.43 cal
300 kJ71,701.72 cal
400 kJ95,602.29 cal
500 kJ119,502.9 cal
600 kJ143,403.4 cal
800 kJ191,204.6 cal
1,000 kJ239,005.7 cal
1,500 kJ358,508.6 cal
2,000 kJ478,011.5 cal
2,500 kJ597,514.3 cal
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Other energy conversions

Frequently asked questions

How many calories are in a kilojoule?
One kilojoule is 239.0057 calories. calories = kilojoules × 239.005736.
How do I convert kilojoules to calories?
Multiply the number of kilojoules by 239.005736. For example, 10 kJ × 239.005736 = 2,390.057 cal.
What is the difference between kilojoules and calories?
Kilojoule (kJ) and Calorie (cal) both measure energy. Energy units for food, electricity and physics. The "calorie" on a nutrition label is a kilocalorie — 1,000 of the calories used in physics.
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