Convert kJ to kcal
Enter the number of kilojoules that you want to convert to kilocalories.
How to Convert Kilojoules to Kilocalories
The kilojoule and kilocalorie are both units of energy. 1 kilocalorie equals 4.184 kilojoules. This means to convert kilojoules to kilocalories, you divide by 4.184.
Formula
Step-by-Step Example
Convert 5 kJ to kilocalories:
We need to convert kilojoules to kilocalories
Since 1 kcal = 4.184 kJ, divide by 4.184
5 ÷ 4.184 = 1.1950286807
5 kJ = 1.1950286807 kcal
Kilojoule to Kilocalorie Conversion Table
Quick reference table for common kilojoule to kilocalorie conversions. Click any value for detailed calculation.
| Kilojoules (kJ) | Kilocalories (kcal) |
|---|---|
| 1 kJ | 0.2390057361 kcal |
| 2 kJ | 0.4780114723 kcal |
| 5 kJ | 1.1950286807 kcal |
| 10 kJ | 2.3900573614 kcal |
| 15 kJ | 3.5850860421 kcal |
| 20 kJ | 4.7801147228 kcal |
| 25 kJ | 5.9751434034 kcal |
| 50 kJ | 11.950286807 kcal |
| 100 kJ | 23.900573614 kcal |
About These Units
Kilojoule (kJ)
A kilojoule (kJ) equals 1,000 joules or approximately 239 calories. Kilojoules measure food energy on nutrition labels in Australia, Europe, and many countries. An average adult needs 8,400-10,000 kJ daily. One kJ equals approximately 0.239 kcal.
Kilocalorie (kcal)
A kilocalorie (kcal), often written as "Calorie" (capital C) on food labels, equals 1,000 small calories or 4,184 joules. Kilocalories measure food energy. Average adult needs 2,000-2,500 kcal daily. Walking one mile burns about 80-100 kcal.
Frequently Asked Questions
How do I convert kilojoules to kilocalories?
To convert kilojoules to kilocalories, divide the value by 4.184. For example, 10 kJ = 2.3900573614 kcal.
How many kilocalories are in 1 kilojoule?
1 kilojoule equals 0.2390057361 kilocalories.
What is the formula for kilojoules to kilocalories?
The formula is: kcal = kJ ÷ 4.184.