Kilocalories to Kilojoules
Convert kilocalories to kilojoules for nutrition labels, food energy, diet tracking, and kcal/Calorie comparisons.
How to convert kcal to kJ
To convert a value from kilocalories (kcal) to kilojoules (kJ), enter the number in the converter above. Use the swap control if you need the reverse direction.
x is the source value in kcal; y is the result in kJ.
Popular conversions
Quick answers for common kcal to kJ values are available from the related conversion pages.
Use the related tools section for fixed-value conversions and the reverse direction.
Common conversion table
Quick reference table for common kcal to kJ values:
| kcal | kJ |
|---|---|
| 1 | 4.184 |
| 5 | 20.92 |
| 10 | 41.84 |
| 50 | 209.2 |
| 100 | 418.4 |
| 1,000 | 4,184 |
About kilocalories
Kilocalorie (kcal) — One kilocalorie is exactly 1,000 small calories, or 4.184 kilojoules. On many nutrition labels, Calorie with a capital C means kilocalorie.
Common uses: Kilocalories are used for nutrition labels, food energy, diet tracking, exercise estimates, and kcal/Calorie comparisons.
About kilojoules
Kilojoule (kJ) — One kilojoule is exactly 1,000 joules.
Common uses: Kilojoules are used for food energy labels, nutrition references, chemistry, physics, and engineering calculations.
Frequently Asked Questions
Related Tools
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