Kilojoules to Calories Converter (kJ to cal)
Kilojoules to Calories Converter (kJ to cal)
Convert kilojoules (kJ) to thermochemical calories (cal) with ease. Useful for laboratory measurements where energy is recorded in metric kilojoules and needs conversion to small thermal calories.
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 Calories (cal).
- The converted value in Calories (cal) updates instantly in the result box.
Kilojoules to Calories Formula
To convert from kilojoules to calories, use the authoritative physical relationship:
Formula:
cal = kJ × 239.006
Calculation Examples
- Example 1: 1 kJ = 239 cal
- Example 2: 5 kJ = 1,195 cal
- Example 3: 10 kJ = 2,390 cal
- Example 4: 50 kJ = 1.195e+04 cal
Kilojoules to Calories Conversion Table
| Kilojoules (kJ) | Calories (cal) |
|---|---|
| 1 kJ | 239.01 cal |
| 2 kJ | 478.01 cal |
| 5 kJ | 1,195.03 cal |
| 10 kJ | 2,390.06 cal |
| 20 kJ | 4,780.11 cal |
| 50 kJ | 11,950.29 cal |
| 100 kJ | 23,900.57 cal |
Frequently Asked Questions
How do I convert Kilojoules to Calories?
Input your number in kilojoules into the calculator above, and your equivalent in calories 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.