Kilocalories to Kilojoules Converter
1 kilocalorie = 4.184 kilojoules. Multiply the number of kilocalories by 4.184.
Result
1 kcal = 4.184 kJ
100 kcal
418.4 kJ
Both bars show the same amount: 100 kcal on top, 418.4 kJ below.
Quick challenge
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How it works
Formula: kJ = kcal × 4.184
1 kilocalorie equals 4.184 kilojoules (and 1 kilojoule equals 0.239006 kilocalories). Multiply the number of kilocalories by 4.184. For 250 kilocalories: 250 × 4.184 = 1,046 kJ.
Kilocalories to kilojoules conversion table
| kcal | kJ |
|---|---|
| 100 kcal | 418.4 kJ |
| 200 kcal | 836.8 kJ |
| 300 kcal | 1,255.2 kJ |
| 400 kcal | 1,673.6 kJ |
| 500 kcal | 2,092 kJ |
| 600 kcal | 2,510.4 kJ |
| 700 kcal | 2,928.8 kJ |
| 800 kcal | 3,347.2 kJ |
| 900 kcal | 3,765.6 kJ |
| 1,000 kcal | 4,184 kJ |
| 1,100 kcal | 4,602.4 kJ |
| 1,200 kcal | 5,020.8 kJ |
| 1,300 kcal | 5,439.2 kJ |
| 1,400 kcal | 5,857.6 kJ |
| 1,500 kcal | 6,276 kJ |
| 1,600 kcal | 6,694.4 kJ |
| 1,700 kcal | 7,112.8 kJ |
| 1,800 kcal | 7,531.2 kJ |
| 1,900 kcal | 7,949.6 kJ |
| 2,000 kcal | 8,368 kJ |
| 2,500 kcal | 10,460 kJ |
| 3,000 kcal | 12,552 kJ |
| 3,500 kcal | 14,644 kJ |
| 4,000 kcal | 16,736 kJ |
| 4,500 kcal | 18,828 kJ |
| 5,000 kcal | 20,920 kJ |
| 5,500 kcal | 23,012 kJ |
| 6,000 kcal | 25,104 kJ |
| 6,500 kcal | 27,196 kJ |
| 7,000 kcal | 29,288 kJ |
| 7,500 kcal | 31,380 kJ |
| 8,000 kcal | 33,472 kJ |
| 8,500 kcal | 35,564 kJ |
| 9,000 kcal | 37,656 kJ |
| 9,500 kcal | 39,748 kJ |
| 10,000 kcal | 41,840 kJ |
Frequently asked questions
How many kilojoules are in 1 kilocalorie?
1 kilocalorie = 4.184 kilojoules. The other way round, 1 kilojoule = 0.239006 kilocalories.
How do I convert kilocalories to kilojoules?
Multiply the number of kilocalories by 4.184. For example, 100 kcal = 418.4 kJ.
How many kilojoules is 250 kilocalories?
250 kilocalories = 1,046 kilojoules (250 × 4.184 = 1,046).
How many kilojoules is 2,000 kilocalories?
2,000 kilocalories = 8,368 kilojoules (2,000 × 4.184 = 8,368).