Convert Kilocalories (kcal) to Kilojoules (kJ)
Need to switch Kilocalories into Kilojoules? Use the ratio 4.184 — that is, 1 kcal = 4.184 kJ — to get an accurate result every time.
Formula
1 kcal = 4.184 kJ
To convert kcal to kJ, multiply the value by 4.184.
Conversion Table
| Kilocalories (kcal) | Kilojoules (kJ) |
|---|---|
| 0.01 kcal | 0.0418 kJ |
| 0.1 kcal | 0.4184 kJ |
| 0.5 kcal | 2.092 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 |
| 15 kcal | 62.76 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 |
| 2500 kcal | 10460 kJ |
| 5000 kcal | 20920 kJ |
| 10000 kcal | 41840 kJ |
| 50000 kcal | 209200 kJ |
Common kcal to kJ Examples
- 1 kcal = 4.184 kJ
- 5 kcal = 20.92 kJ
- 10 kcal = 41.84 kJ
- 25 kcal = 104.6 kJ
- 50 kcal = 209.2 kJ
- 100 kcal = 418.4 kJ
- 500 kcal = 2092 kJ
- 1000 kcal = 4184 kJ
Frequently Asked Questions
Yes. Simply invert the ratio: divide the kJ value by 4.184 to get the equivalent in kcal.
For everyday use, 2 to 4 decimal places are enough. Scientific or engineering work may require 6 or more.
Different regions and industries developed their own Energy standards over time. International trade and science later required conversion tools to bridge them.
Both measure Energy, but they belong to different unit systems or scales, which is why a conversion factor is needed between them.
The formula is 1 kcal = 4.184 kJ. To convert any value, multiply the value by 4.184.
1 kcal equals 4.184 kJ. This ratio applies to every conversion between the two units.