Calorie to Kilojoule Converter
Convert Calories to Kilojoules
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How to Convert Calories to Kilojoules
To convert calories to kilojoules, multiply the number of calories by 0.004184. This is because 1 calorie is equal to 4.184 joules, and 1 kilojoule is equal to 1,000 joules.
Formula
Kilojoules = Calories × 0.004184
or
kJ = cal × 0.004184
Step-by-step process
- Take the measurement in calories
- Multiply that number by 0.004184
- The result is the equivalent energy in kilojoules
Examples
- 500 calories = 500 × 0.004184 = 2.092 kJ
- 1,000 calories = 1,000 × 0.004184 = 4.184 kJ
- 5,000 calories = 5,000 × 0.004184 = 20.92 kJ
Common Calories to Kilojoules Conversions
Here is a table of common conversions for quick reference:
| Calories (cal) | Kilojoules (kJ) | Calories (cal) | Kilojoules (kJ) |
|---|---|---|---|
| 100 | 0.4184 | 5,000 | 20.92 |
| 250 | 1.046 | 10,000 | 41.84 |
| 500 | 2.092 | 25,000 | 104.6 |
| 1,000 | 4.184 | 50,000 | 209.2 |
| 2,500 | 10.46 | 100,000 | 418.4 |
Other conversions from calories
Calories can be converted to various other units of energy. Here are some common conversions:
Frequently Asked Questions
How many calories are in a kilojoule?
There are 239.006 calories in one kilojoule.