📏 Kilojoules to Kilocalories Converter
Convert kilojoules (kJ) to kilocalories (kcal) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 kilojoule (kJ) = 0.23900574 kilocalories (kcal). Formula: kcal = kJ × 0.23900574.
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Kilojoules to Kilocalories Converter inputs
Result
Kilojoules to Kilocalories conversion table
| Kilojoules (kJ) | Kilocalories (kcal) |
|---|---|
| 0.1 kJ | 0.023900574 kcal |
| 0.5 kJ | 0.11950287 kcal |
| 1 kJ | 0.23900574 kcal |
| 2 kJ | 0.47801147 kcal |
| 3 kJ | 0.71701721 kcal |
| 5 kJ | 1.1950287 kcal |
| 10 kJ | 2.3900574 kcal |
| 20 kJ | 4.7801147 kcal |
| 25 kJ | 5.9751434 kcal |
| 50 kJ | 11.950287 kcal |
| 100 kJ | 23.900574 kcal |
| 1,000 kJ | 239.00574 kcal |
Other energy conversions
How to convert kilojoules to kilocalories
Multiply the number of kilojoules by 0.23900574 to get kilocalories: kcal = kJ × 0.23900574.
Example: 5 kJ = 1.1950287 kcal.
The kilojoule (kJ) and the kilocalorie (food calorie) (kcal) are both units of energy. Need the opposite direction? Use the kcal to kJ converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
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Frequently asked questions
How many kilocalories are in a kilojoule?
1 kilojoule = 0.23900574 kilocalories.
How do I convert kilojoules to kilocalories?
Use the formula kcal = kJ × 0.23900574. For example, 5 kJ = 1.1950287 kcal.
How do I convert kilocalories back to kilojoules?
1 kilocalorie (food calorie) = 4.184 kilojoules. Use the kcal to kJ converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.