Convert Calories to Kilojoules
Convert calories to kilojoules (cal to kJ) instantly. Free, accurate calories to kilojoules calculator with conversion formula and chart.
1 cal = 0.004184 kJ
Conversion formula
1 calorie = 0.004184 kilojoules
Multiply a value in calories by 0.004184 to get kilojoules; divide by the same number to convert back.
Calories to Kilojoules conversion table
| Calories (cal) | Kilojoules (kJ) |
|---|---|
| 1 cal | 0.004184 kJ |
| 2 cal | 0.008368 kJ |
| 5 cal | 0.02092 kJ |
| 10 cal | 0.04184 kJ |
| 25 cal | 0.1046 kJ |
| 50 cal | 0.2092 kJ |
| 100 cal | 0.4184 kJ |
| 500 cal | 2.092 kJ |
| 1,000 cal | 4.184 kJ |
- For example, 12 calories is 0.050208 kilojoules.
- A value of 75 calories converts to 0.3138 kilojoules.
- Going the other way, 1 kilojoule is 239.006 calories.
More energy conversions
About Calories to Kilojoules
Easily convert calories (cal) to kilojoules (kJ) with this free, instant calculator. Enter a value in calories to see the equivalent in kilojoules right away — accurate and calculated in your browser.
How to use Calories to Kilojoules
- 1
Enter the number of calories you want to convert.
- 2
The equivalent value in kilojoules appears instantly.
- 3
Switch units anytime to convert in either direction.
How to convert Calories to Kilojoules
Enter any value in calories (cal) and this calculator instantly shows the equivalent in kilojoules (kJ) using the exact internationally agreed conversion factor — no rounding tricks, no ads in the way, and it works offline once the page is loaded.
Use the swap button to convert in the other direction (kilojoules to calories), or switch to any other energy unit from the dropdown — the same page handles joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, btu, electronvolts.
Frequently Asked Questions
How do you convert calories to kilojoules?
Enter your value in calories and the converter instantly shows the result in kilojoules using the exact conversion factor.
Is the calories to kilojoules converter free?
Yes — it's completely free, instant and requires no sign-up.
Related Tools
Looking for something else? Browse all 842+ tools