Handy Units
Kilocalories to Kilojouleskcal → kJ
1 kcal = 4.184 kJ · 1 kJ = 0.239006 kcal
Formula
kJ = kcal × 4.184
Example: 500 kcal = 500 × 4.184 = 2,092 kJ
These units differ only by a fixed factor: multiply by it to convert, divide to go back. The factors are exact international definitions (for example 1 inch = 2.54 cm exactly); results are rounded only for display.
Kilocalories and Kilojoules chart
| Kilocalories (kcal) | Kilojoules (kJ) |
|---|---|
| 1 kcal | 4.184 kJ |
| 50 kcal | 209.2 kJ |
| 100 kcal | 418.4 kJ |
| 200 kcal | 836.8 kJ |
| 500 kcal | 2,092 kJ |
| 1,000 kcal | 4,184 kJ |
| 1,500 kcal | 6,276 kJ |
| 2,000 kcal | 8,368 kJ |
| Kilojoules (kJ) | Kilocalories (kcal) |
|---|---|
| 1 kJ | 0.239006 kcal |
| 100 kJ | 23.9006 kcal |
| 500 kJ | 119.503 kcal |
| 1,000 kJ | 239.006 kcal |
| 2,000 kJ | 478.011 kcal |
| 5,000 kJ | 1,195.03 kcal |
| 8,400 kJ | 2,007.65 kcal |
About these units
Kilocalorie (kcal)Kilocalories, the “Calories” on food labels: 1 kcal = 4.184 kJ.
Kilojoule (kJ)Kilojoules, the energy unit on nutrition labels in China, Europe and Australia.
Questions
How many Kilojoules are in 1 Kilocalories?
1 kcal = 4.184 kJ.
How many Kilocalories are in 1 Kilojoules?
1 kJ = 0.239006 kcal.