How to convert kilocalories to kilojoules
Multiply the number of kilocalories by 4.184. That is all there is to it, because the factor between kilocalories and kilojoules never changes.
Formula
kJ = kcal × 4.184
Example: 50 kilocalories × 4.184 = 209.2 kilojoules.
kcal to kJ chart
| Kilocalories (kcal) | Kilojoules (kJ) |
|---|---|
| 1 kcal | 4.184 kJ |
| 50 kcal | 209.2 kJ |
| 100 kcal | 418.4 kJ |
| 150 kcal | 627.6 kJ |
| 200 kcal | 836.8 kJ |
| 250 kcal | 1,046 kJ |
| 300 kcal | 1,255.2 kJ |
| 400 kcal | 1,673.6 kJ |
| 500 kcal | 2,092 kJ |
| 1,000 kcal | 4,184 kJ |
| 1,500 kcal | 6,276 kJ |
| 2,000 kcal | 8,368 kJ |
| 2,500 kcal | 10,460 kJ |
| 3,000 kcal | 12,552 kJ |
Values are rounded to at most four decimals. The converter above shows more digits.
About the units
One kilocalorie is 4,184 joules.
One kilojoule is 1,000 joules.
Need the other direction? Use the kJ to kcal converter. For every energy unit at once, open the Energy Converter.
Frequently asked questions
How many kilojoules are in a kilocalorie?
There are 4.184 kilojoules in one kilocalorie.
How do I convert kilocalories to kilojoules?
Multiply the number of kilocalories by 4.184. For example: 50 kilocalories × 4.184 = 209.2 kilojoules.
What is 500 kilocalories in kilojoules?
500 kilocalories equals 2,092 kilojoules.