Kilocalorie to Kilojoule Converter
Convert Kilocalorie (kcal) to Kilojoule (kJ) instantly with this energy converter. Use the calculator above, then check the formula, worked examples, table, and manual steps below.
Formula
kJ = kcal × 4.184
Multiply the Kilocalorie value by 4.184 to get the equivalent value in Kilojoule.
Example Conversions
1 Kilocalorie (kcal)
4.184 Kilojoule (kJ)
5 Kilocalorie (kcal)
20.92 Kilojoule (kJ)
10 Kilocalorie (kcal)
41.84 Kilojoule (kJ)
25 Kilocalorie (kcal)
104.6 Kilojoule (kJ)
100 Kilocalorie (kcal)
418.4 Kilojoule (kJ)
Conversion Table
| Kilocalorie (kcal) | Kilojoule (kJ) |
|---|---|
| 0.1 | 0.4184 |
| 0.5 | 2.092 |
| 1 | 4.184 |
| 2 | 8.368 |
| 5 | 20.92 |
| 10 | 41.84 |
| 25 | 104.6 |
| 50 | 209.2 |
| 100 | 418.4 |
| 250 | 1046 |
| 500 | 2092 |
| 1000 | 4184 |
How to Convert Manually
Use these steps to convert Kilocalorie values to Kilojoule without the calculator.
- Write down the value in Kilocalorie (kcal) that you want to convert.
- Multiply that value by 4.184.
- For example, 10 Kilocalorie × 4.184 = 41.84 Kilojoule.
- Label the result as Kilojoule (kJ).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Kilocalorie and one Kilojoule.
About Kilocalorie and Kilojoule
Converting Kilocalorie to Kilojoule is common in energy applications, engineering, and everyday life. Whether you are translating specifications from international manuals, completing homework, or planning a project, having an accurate kcal to kJ calculation ensures your measurements are correct.
The Kilocalorie is a unit of energy. One Kilocalorie equals 4184 J in this converter's base scale.
The Kilojoule is also a energy unit. One Kilojoule equals 1000 J in the same base scale.
Precision and Rounding: When converting Kilocalorie to Kilojoule, you may encounter long decimal numbers. For most practical purposes, rounding to two or three decimal places is sufficient. However, for machining, scientific research, or strict engineering tolerances, you should maintain as much precision as possible before your final calculation.
Worked Example
15 Kilocalorie equals 62.76 Kilojoule.
15 kcal × 4.184 = 62.76 kJ
FAQ
How do I convert Kilocalorie to Kilojoule?
Multiply the Kilocalorie value by 4.184 to get the equivalent value in Kilojoule.
What is the formula for Kilocalorie to Kilojoule?
The formula is kJ = kcal × 4.184.
How many Kilojoule are in 1 Kilocalorie?
1 Kilocalorie equals 4.184 Kilojoule.
Can I convert Kilojoule back to Kilocalorie?
Yes. 1 Kilojoule equals 0.2390057361 Kilocalorie, and the related converter can reverse the calculation.
What are common names for Kilocalorie and Kilojoule?
Kilocalorie is shown as kcal and may also be searched as kilocalorie, kilocalories, food calorie. Kilojoule is shown as kJ and may also be searched as kilojoule, kilojoules.
Was this page helpful?
Let us know if this converter met your needs.