Enter the energy in kilojoules into the calculator to convert the energy to kilocalories (kcal, also called food “Calories”). You can also convert to small calories (cal) using the drop-down.
| kJ to kcal | kcal to kJ |
|---|---|
| 5 kJ = 1.195 kcal | 60 kcal = 251.0 kJ |
| 10 kJ = 2.390 kcal | 90 kcal = 376.6 kJ |
| 20 kJ = 4.780 kcal | 110 kcal = 460.2 kJ |
| 25 kJ = 5.975 kcal | 130 kcal = 543.9 kJ |
| 30 kJ = 7.170 kcal | 160 kcal = 669.4 kJ |
| 40 kJ = 9.560 kcal | 180 kcal = 753.1 kJ |
| 50 kJ = 11.950 kcal | 220 kcal = 920.5 kJ |
| 75 kJ = 17.925 kcal | 240 kcal = 1004.2 kJ |
| 100 kJ = 23.901 kcal | 260 kcal = 1087.8 kJ |
| 120 kJ = 28.681 kcal | 280 kcal = 1171.5 kJ |
| 150 kJ = 35.851 kcal | 320 kcal = 1338.9 kJ |
| 200 kJ = 47.801 kcal | 360 kcal = 1506.2 kJ |
| 250 kJ = 59.752 kcal | 420 kcal = 1757.3 kJ |
| 300 kJ = 71.702 kcal | 450 kcal = 1882.8 kJ |
| 350 kJ = 83.652 kcal | 550 kcal = 2301.2 kJ |
| 400 kJ = 95.602 kcal | 650 kcal = 2719.6 kJ |
| 500 kJ = 119.503 kcal | 850 kcal = 3556.4 kJ |
| 750 kJ = 179.255 kcal | 1200 kcal = 5020.8 kJ |
| 1000 kJ = 239.006 kcal | 1800 kcal = 7531.2 kJ |
| 2000 kJ = 478.012 kcal | 2200 kcal = 9204.8 kJ |
| Formulas: kcal = kJ × 0.239006; kJ = kcal ÷ 0.239006. | |
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kJ to Calories (kcal) Conversion Formula
The following formula is used to convert energy from kilojoules (kJ) to kilocalories (kcal). On food labels, kilocalories are often written as “Calories” (with a capital C).
kcal = kJ * 0.239006
Variables:
- kJ is the energy in kilojoules
- kcal is the energy in kilocalories (food Calories)
To convert kilojoules to kilocalories, multiply the energy value in kilojoules by 0.239006.
What is the Difference Between Kilojoules and Calories?
Kilojoules (kJ) and calories are both units of energy. The joule (J) is the SI unit of energy, and 1 kJ = 1,000 J. A joule is the work done when a force of 1 newton acts through a distance of 1 meter (1 J = 1 N·m). The calorie (cal) is a non-SI unit historically defined as the energy needed to raise the temperature of 1 gram of water by 1°C (definition varies by conditions). In nutrition, “Calorie” (capital C) means a kilocalorie (kcal), where 1 Calorie = 1 kcal = 4.184 kJ (and 1 cal = 4.184 J).
How to Convert kJ to Calories?
The following steps outline how to convert kilojoules to kilocalories (kcal).
- First, determine the energy in kilojoules (kJ).
- Next, use the conversion formula: kcal = kJ * 0.239006.
- Finally, calculate the energy in kilocalories (kcal).
- After inserting the kilojoules and calculating the result, check your answer with the calculator above.
Example Problem :
Use the following variable as an example problem to test your knowledge.
Energy in kilojoules (kJ) = 100
Using the conversion formula, the energy in kilocalories is calculated as:
kcal = 100 * 0.239006 = 23.90 kcal (≈ 23.90 food Calories)
