Kilojoules to Kilocalories Converter (kJ to kcal)
Kilojoules to Kilocalories Converter (kJ to kcal)
Convert nutritional kilojoules (kJ) to kilocalories (kcal / food Calories) instantly. Widely used worldwide to interpret international food packaging, nutrition facts, and dietary calorie targets.
How to use this converter
- Enter the value in Kilojoules (kJ) you want to convert.
- Ensure the “From” selector is set to Kilojoules (kJ).
- Ensure the “To” selector is set to Kilocalories (kcal).
- The converted value in Kilocalories (kcal) updates instantly in the result box.
Kilojoules to Kilocalories Formula
To convert from kilojoules to kilocalories, use the authoritative physical relationship:
Formula:
kcal = kJ / 4.184
Calculation Examples
- Example 1: 1 kJ = 0.239 kcal
- Example 2: 5 kJ = 1.195 kcal
- Example 3: 10 kJ = 2.39 kcal
- Example 4: 50 kJ = 11.95 kcal
Kilojoules to Kilocalories Conversion Table
| Kilojoules (kJ) | Kilocalories (kcal) |
|---|---|
| 1 kJ | 0.239006 kcal |
| 2 kJ | 0.478011 kcal |
| 5 kJ | 1.1950 kcal |
| 10 kJ | 2.3901 kcal |
| 20 kJ | 4.7801 kcal |
| 50 kJ | 11.9503 kcal |
| 100 kJ | 23.9006 kcal |
Frequently Asked Questions
How do I convert Kilojoules to Kilocalories?
Input your number in kilojoules into the calculator above, and your equivalent in kilocalories is displayed immediately according to the standard physical conversion formula.
What is the difference between small calories (cal) and food Calories (kcal)?
One food Calorie (often capitalized as Calorie or written as kcal) equals exactly 1,000 small thermal calories (cal), or 4.184 kilojoules (kJ). In everyday nutritional conversations and food nutrition facts tables, “calories” almost always refers to kilocalories (kcal).
Is this calculation accurate for engineering and scientific applications?
Yes. ConverterHub uses exact thermochemical and SI standard conversion constants (including 1 cal = 4.184 J and 1 kWh = 3,600,000 J) to ensure full precision across academic, domestic, and laboratory calculations.