To convert kilojoules (kJ) to calories (cal) use this calculator, the conversion factor is 1 kJ = 0.239006 cal, and 1000 kJ are equals to 239.01 cal.
Calories are a non-SI unit of energy commonly used in food nutrition labels and exercise calculations. It’s important to note that when we typically refer to “calories” in food, we’re actually talking about kilocalories (kcal).
Kilojoules to Calories Calculator
| Kilojoules (kJ) to | Calories (cal) |
|---|---|
| 1000 kJ | 239.01 cal |
| 1200 kJ | 287.41 cal |
| 2000 kJ | 478.02 cal |
| 600 kJ | 143.64 cal |
| 500 kJ | 119.50 cal |
| 3000 kJ | 716.99 cal |
| 4000 kJ | 955.51 cal |
| 8700 kJ | 2078.69 cal |
| 100 kJ | 23.90 cal |
| 139 kJ | 33.23 cal |
| 600 kJ | 143.64 cal |
Kilojoules to Calories Conversion Formula
The formula for converting kilojoules to calories is:
- 1 kJ = 0.239006 cal
- 1 cal = 4.184 kJ
| Kilojoules (kJ) | Conversion Equation | Calories (kcal) |
|---|---|---|
| 100 kJ | 100 × 0.239006 | 23.9 kcal |
| 500 kJ | 500 × 0.239006 | 119.5 kcal |
| 1000 kJ | 1000 × 0.239006 | 239.0 kcal |
| 2000 kJ | 2000 × 0.239006 | 478.0 kcal |
| 4184 kJ | 4184 × 0.239006 | 1000.0 kcal |
How to Convert Kilojoules to Calories
To convert kilojoules to calories, multiply the number of kilojoules by 0.239006.
For example, if you have 500 kJ, you can calculate the calories like this:
500 kJ × 0.239006 = 119.503 cal
So, 500 kilojoules is equal to about 119.5 calories.
And to convert 2500 kJ to calories: 2500 kJ × 0.239006 = 597.515 kcal
How many kJ are 1000 calories?
To find out how many kilojoules are in 1000 calories, we use the reverse conversion:
1000 kcal × 4.184 = 4184 kJ
Therefore, 1000 calories is equivalent to 4184 kilojoules.
This conversion is particularly useful when comparing international food labels, as some countries use kJ while others use kcal.
What is a kilocalorie?
A kilocalorie (kcal) is a unit of energy equal to 1000 calories. It’s important to understand that when we casually refer to “calories” in nutrition and dieting, we’re actually talking about kilocalories.
One kilocalorie is the amount of energy required to raise the temperature of one kilogram of water by one degree Celsius at standard atmospheric pressure.
In scientific contexts, a calorie (cal) is a much smaller unit, and 1 kcal = 1000 cal. However, in everyday usage, “calorie” and “kilocalorie” are often used interchangeably, which can lead to confusion.
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