Convert kilojoule (kJ) to kilocalorie (kcal).
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Kilocalorie to Kilojoule Converter (kcal to kJ)
Convert kilocalorie (kcal) to kilojoule (kJ).Unit Converter · Energy
Quick answer
1 kilocalorie (kcal) is equal to 4.184 kilojoules (kJ). 1 kilojoule (kJ) is approximately equal to 0.2390057 kilocalories (kcal).
To convert kcal to kJ, multiply the value in kilocalories by 4.184. For example, 10 kcal = 41.84 kJ, and 100 kcal = 418.4 kJ.
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Quick reference — kilocalorie to kilojoule
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How to convert kilocalories to kilojoules
How many kilojoules are in a kilocalorie? 1 kilocalorie is 4.184 kilojoules. This free kcal to kJ converter and kilocalorie to kilojoule calculator gives the answer instantly for any value.
To convert kilocalorie (kcal) to kilojoule (kJ), multiply the value in kilocalories by 4.184.
kJ = kcal × 4.184
- 1
Take the value in kilocalories
For example, 25 kcal.
- 2
Multiply by 4.184
25 × 4.184.
- 3
Read the answer in kilojoules
25 kcal = 104.6 kJ.
Kilocalorie to Kilojoule conversion table
Common values from 1 to 1,000 kilocalories converted to kilojoules.
| Kilocalorie (kcal) | Kilojoule (kJ) |
|---|---|
| 1 kcal | 4.184 kJ |
| 2 kcal | 8.368 kJ |
| 3 kcal | 12.552 kJ |
| 4 kcal | 16.736 kJ |
| 5 kcal | 20.92 kJ |
| 6 kcal | 25.104 kJ |
| 7 kcal | 29.288 kJ |
| 8 kcal | 33.472 kJ |
| 9 kcal | 37.656 kJ |
| 10 kcal | 41.84 kJ |
| 15 kcal | 62.76 kJ |
| 20 kcal | 83.68 kJ |
| 25 kcal | 104.6 kJ |
| Kilocalorie (kcal) | Kilojoule (kJ) |
|---|---|
| 30 kcal | 125.52 kJ |
| 40 kcal | 167.36 kJ |
| 50 kcal | 209.2 kJ |
| 60 kcal | 251.04 kJ |
| 70 kcal | 292.88 kJ |
| 75 kcal | 313.8 kJ |
| 80 kcal | 334.72 kJ |
| 90 kcal | 376.56 kJ |
| 100 kcal | 418.4 kJ |
| 250 kcal | 1,046 kJ |
| 500 kcal | 2,092 kJ |
| 1,000 kcal | 4,184 kJ |
About kilocalories and kilojoules
Kilocalorie (kcal)
A kilocalorie (kcal) is 1,000 calories, or 4,184 joules. It is the "Calorie" used on food labels and in diet and fitness tracking.
Kilojoule (kJ)
A kilojoule (kJ) is 1,000 joules. Food energy on nutrition labels is often shown in kJ as well as kcal.
kcal to kJ: common questions
- How many kilojoules are in 1 kilocalorie?
- 1 kilocalorie (kcal) is equal to 4.184 kilojoules (kJ). In short: 1 kcal = 4.184 kJ.
- How do I convert kilocalories to kilojoules?
- To convert kcal to kJ, multiply the value in kilocalories by 4.184. For example, 5 kcal = 20.92 kJ.
- How do I convert kilojoules to kilocalories?
- To convert kJ to kcal, divide the value in kilojoules by 4.184. Or open the Kilojoule to Kilocalorie converter, which does it for you.
- What is 10 kcal in kJ, and what is 100 kcal?
- 10 kcal = 41.84 kJ, and 100 kcal = 418.4 kJ. The table above lists more values from 1 to 1,000.
- Is this kcal to kJ converter accurate?
- Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.
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