How to convert kilocalories (food Calories) to kilojoules
1 kilocalorie (food Calorie) = 4.184 kilojoules and 1 kilojoule = 0.2390057361 kilocalories (food Calories). To convert kilocalories (food Calories) to kilojoules, multiply by 4.184:
kJ = kcal × 4.184
Examples
- 100 kcal × 4.184 = 418.4 kJ
- 500 kcal × 4.184 = 2,092 kJ
- 2,000 kcal × 4.184 = 8,368 kJ
kcal to kJ conversion table
| Kilocalories (food Calories) (kcal) | Kilojoules (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 |
| 12 kcal | 50.208 kJ |
| 15 kcal | 62.76 kJ |
| 20 kcal | 83.68 kJ |
| 25 kcal | 104.6 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 |
| 150 kcal | 627.6 kJ |
| 200 kcal | 836.8 kJ |
| 250 kcal | 1,046 kJ |
| 500 kcal | 2,092 kJ |
| 1,000 kcal | 4,184 kJ |
| 5,000 kcal | 20,920 kJ |
| 10,000 kcal | 41,840 kJ |
What is a kilocalorie?
A kilocalorie (the food Calorie) is 4.184 kilojoules, the energy to warm 1 kg of water by about 1 °C.
What is a kilojoule?
A kilojoule is 1,000 joules. Food labels in many countries show energy in both kJ and kcal.
Related conversions
Frequently asked questions
How do I convert kilocalories (food Calories) to kilojoules?
Multiply the value in kilocalories (food Calories) by 4.184. 1 kilocalorie (food Calorie) = 4.184 kilojoules.
How many kilocalories (food Calories) are in one kilojoule?
1 kilojoule = 0.2390057361 kilocalories (food Calories).
What is 500 kcal in kJ?
500 kcal = 2,092 kJ.
What is 2,000 kcal in kJ?
2,000 kcal = 8,368 kJ.