Convert Calories (cal) to Kilojoules (kJ)
Looking for a fast cal to kJ conversion? The relationship is fixed: 1 cal = 0.004184 kJ, which means you divide the value by 239.005736.
Formula
1 cal = 0.004184 kJ
To convert cal to kJ, divide the value by 239.005736.
Conversion Table
| Calories (cal) | Kilojoules (kJ) |
|---|---|
| 0.01 cal | 0 kJ |
| 0.1 cal | 0.0004 kJ |
| 0.5 cal | 0.0021 kJ |
| 1 cal | 0.0042 kJ |
| 2 cal | 0.0084 kJ |
| 3 cal | 0.0126 kJ |
| 5 cal | 0.0209 kJ |
| 10 cal | 0.0418 kJ |
| 15 cal | 0.0628 kJ |
| 20 cal | 0.0837 kJ |
| 25 cal | 0.1046 kJ |
| 50 cal | 0.2092 kJ |
| 100 cal | 0.4184 kJ |
| 250 cal | 1.046 kJ |
| 500 cal | 2.092 kJ |
| 1000 cal | 4.184 kJ |
| 2500 cal | 10.46 kJ |
| 5000 cal | 20.92 kJ |
| 10000 cal | 41.84 kJ |
| 50000 cal | 209.2 kJ |
Common cal to kJ Examples
- 1 cal = 0.0042 kJ
- 5 cal = 0.0209 kJ
- 10 cal = 0.0418 kJ
- 25 cal = 0.1046 kJ
- 50 cal = 0.2092 kJ
- 100 cal = 0.4184 kJ
- 500 cal = 2.092 kJ
- 1000 cal = 4.184 kJ
Frequently Asked Questions
1 cal equals 0.004184 kJ. This ratio applies to every conversion between the two units.
The formula is 1 cal = 0.004184 kJ. To convert any value, divide the value by 239.005736.
Take the value in cal and divide the value by 239.005736. The result is the same value expressed in kJ.
The ratio 0.004184 is defined to high precision and is exact for most practical purposes. Rounding only matters when many decimal places are needed.
For everyday use, 2 to 4 decimal places are enough. Scientific or engineering work may require 6 or more.
Yes. Simply invert the ratio: divide the kJ value by 0.004184 to get the equivalent in cal.