Kilojoules to kilocalories (kJ to kcal)
Convert kilojoules to kilocalories. For energy, 1 kJ equals 0.2390057361 kcal.
Converter
kJ to kcal conversion table
| Kilojoules | Kilocalories |
|---|---|
| 1 kJ | 0.23900574 kcal |
| 2 kJ | 0.47801147 kcal |
| 5 kJ | 1.1950287 kcal |
| 10 kJ | 2.3900574 kcal |
| 25 kJ | 5.9751434 kcal |
| 50 kJ | 11.950287 kcal |
| 100 kJ | 23.900574 kcal |
| 1000 kJ | 239.00574 kcal |
Formula
kcal = kJ × 0.2390057361
Worked example
25 kJ × 0.2390057361 = 5.975143403 kcal
Popular conversion examples
Choose an example to open this converter with the value filled in. These are useful examples, not a claim about search rankings.
- 1 kJ to kcal = 0.239006 kcal
- 5 kJ to kcal = 1.19503 kcal
- 100 kJ to kcal = 23.9006 kcal
- 1100 kJ to kcal = 262.906 kcal
- 1000 kcal to kJ = 4184 kJ
- 1 kcal to kJ = 4.184 kJ
About kilojoules and kilocalories
Kilojoule (kJ)
A kilojoule is 1,000 joules. It is used for food energy in many countries and for heat and work in engineering.
Kilocalorie (kcal)
A kilocalorie is 1,000 thermochemical calories, or 4,184 joules. It is the unit people mean by “Calories” on food labels.
Both are units of energy; the base unit used internally is J.
Notes
- Calorie = thermochemical calorie (4.184 J); kilocalorie = 1000 cal (the food “Calorie”).
- BTU = International Table BTU (1055.05585262 J). Other BTU definitions (thermochemical, 39 °F, etc.) differ slightly and are not included.
- Energy is not power: a kilowatt-hour is an amount of energy, a kilowatt is a rate.
kJ to kcal FAQs
How do I convert kilojoules to kilocalories?
Multiply the number of kilojoules by 0.2390057361 to get kilocalories. For example, 25 kJ × 0.2390057361 = 5.97514 kcal.
How many kilocalories are in one kilojoule?
1 kJ = 0.2390057361 kcal and 1 kcal = 4.184 kJ. To go the other way, use the kilocalories to kilojoules converter.
How many kilocalories are in 400 kilojoules?
400 kJ = 95.6023 kcal, rounded to 6 significant digits. Change the value in the converter above for any other amount.
How many kilocalories are in 8302 kilojoules?
8302 kJ = 1984.23 kcal, rounded to 6 significant digits.
What is the formula for kilojoules to kilocalories?
kcal = kJ × 0.2390057361, where kJ is the number of kilojoules and kcal is the result in kilocalories. The reverse is kJ = kcal × 4.184.
Is the kJ to kcal conversion exact?
The ratio is exact by definition, but its decimal form does not end (0.239005736138… to 12 significant digits). The converter keeps full precision internally and rounds only the displayed answer, which you can set from 4 to 12 significant digits.
What is the difference between kilojoules and kilocalories?
A kilojoule is 1,000 joules. It is used for food energy in many countries and for heat and work in engineering. A kilocalorie is 1,000 thermochemical calories, or 4,184 joules. It is the unit people mean by “Calories” on food labels.
What is the difference between a calorie and a Calorie?
The calorie (cal) is 4.184 joules. The “Calorie” on food labels is a kilocalorie (kcal): 1 kcal = 1,000 cal = 4184 J.
Related converters
Reverse: Kilocalories to kilojoules.
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Guide
Read: Calories vs Kilocalories (kcal vs cal).