Convert Kilojoule to Kilocalorie
Use this free converter to change kilojoules (kJ) into kilocalories (kcal). Kilojoule and kilocalorie both measure energy. As a quick reference, 1 kJ equals 0.23900574 kcal, and 1 kcal equals 4.184 kJ.
Free · runs in your browser · no sign-up
Kilocalorie (kcal)
0.23900574
1 kJ = 0.23900574 kcal
Energy conversion table
| Kilojoule | Kilocalorie |
|---|---|
| 0.01 | 0.0023900574 |
| 0.1 | 0.023900574 |
| 0.5 | 0.11950287 |
| 1 | 0.23900574 |
| 2 | 0.47801147 |
| 3 | 0.71701721 |
| 5 | 1.1950287 |
| 10 | 2.3900574 |
| 20 | 4.7801147 |
| 25 | 5.9751434 |
| 50 | 11.950287 |
| 100 | 23.900574 |
| 1,000 | 239.00574 |
How to convert Kilojoule to Kilocalorie
Multiply the kilojoule value by 0.23900574 to get kilocalories.
- Enter the number of kilojoules you want to convert.
- The converter instantly shows the equivalent value in kilocalories.
- Worked example: 15 kJ × 0.23900574 = 3.585086 kcal.
- Use the swap button to reverse the conversion (kilocalorie to kilojoule).
About these units
Kilojoule (kJ)
- Definition
- A kilojoule (kJ) is 1,000 joules, a practical size for food energy and mechanical work.
- History
- It is a metric multiple of the joule.
- Current use
- Kilojoules express food energy on nutrition labels in many countries.
Kilocalorie (kcal)
- Definition
- A kilocalorie (kcal) is 1,000 small calories — the "Calorie" used on food labels.
- History
- It was adopted by nutritionists as a practical measure of food energy.
- Current use
- Kilocalories (food Calories) measure the energy content of food and diets.
Frequently asked questions
How many kilocalories are in a kilojoule?
There are 0.23900574 kcal in 1 kJ. To convert, multiply the number of kilojoules by 0.23900574.
How do I convert kilojoules to kilocalories?
Multiply the kilojoule value by 0.23900574 to get kilocalories. For example, 10 kJ = 2.3900574 kcal.
Is this kilojoule-to-kilocalorie converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Kilojoule to other energy units
| Unit | 1 Kilojoule equals |
|---|---|
| Joule (J) | 1000 J |
| Calorie (cal) | 239.00574 cal |
| Kilocalorie (kcal) | 0.23900574 kcal |
| Watt Hour (Wh) | 0.27777778 Wh |
| Kilowatt Hour (kWh) | 0.00027777778 kWh |
| Electronvolt (eV) | 6.2415e+21 eV |
| British Thermal Unit (BTU) | 0.94781712 BTU |
| Foot-Pound (ft·lb) | 737.56215 ft·lb |