Table Of Contents
Kilocalories to kilojoules Conversion
1 kilocalories (kcal) is equal to 4.184 kilojoules (kJ).
1 kcal = 4.184 kJ
or
1 kJ = 0.2390057361 kcal
Formula
To convert a energy from kilocalories (kcal) to kilojoules (kJ), multiply the energy in kilocalories by 4.184
e(kJ) = e(kcal) × 4.184
Examples:
Convert 100 kilocalories to kilojoules:
e(kJ) = 100kcal × 4.184 = 418.4 kJ
Conversion table
| Kilocalories (kcal) | Kilojoules (kJ) |
|---|---|
| 1 kcal | 4.184 kJ |
| 2 kcal | 8.368 kJ |
| 3 kcal | 12.552 kJ |
| 5 kcal | 20.92 kJ |
| 10 kcal | 41.84 kJ |
| 20 kcal | 83.68 kJ |
| 25 kcal | 104.6 kJ |
| 50 kcal | 209.2 kJ |
| 100 kcal | 418.4 kJ |
| 250 kcal | 1046 kJ |
| 500 kcal | 2092 kJ |
| 1000 kcal | 4184 kJ |
| Kilojoules (kJ) | Kilocalories (kcal) |
|---|---|
| 1 kJ | 0.239005736 kcal |
| 2 kJ | 0.478011472 kcal |
| 3 kJ | 0.717017208 kcal |
| 5 kJ | 1.195028681 kcal |
| 10 kJ | 2.390057361 kcal |
| 20 kJ | 4.780114723 kcal |
| 25 kJ | 5.975143403 kcal |
| 50 kJ | 11.950286807 kcal |
| 100 kJ | 23.900573614 kcal |
| 250 kJ | 59.751434034 kcal |
| 500 kJ | 119.502868069 kcal |
| 1000 kJ | 239.005736138 kcal |
Frequently asked questions
How do I convert kilocalories to kilojoules?
Multiply the value in kilocalories by 4.184 to get the result in kilojoules. For example, 5 kcal × 4.184 = 20.92 kJ.
How many kilojoules are in 1 kilocalories?
1 kilocalories (kcal) is equal to 4.184 kilojoules (kJ).
How do I convert kilojoules back to kilocalories?
Use the inverse operation: divide the value in kilojoules by 4.184 to get the result in kilocalories.
How accurate is the kilocalories to kilojoules conversion?
The converter multiplies by the conversion factor 4.184 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
