Joules to Calories Converter
Convert energy from joules to calories.
Result
0
Calories
1 Joules = 0.239006 Calories
How to convert Joules to Calories?
How many Calories are in Joules? The relationship is:
- 1 J = 0.239006 cal
- 1 cal = 4.184 J
To convert Joules to Calories, multiply the value by 0.239006 (or divide by 4.184).
Formula: Calories = Joules × 0.239006
Step-by-Step Calculation
- Take the number of Joules you want to convert (e.g., 500).
- Multiply that value by 0.239006.
- The result is the value in Calories. (Example: 500 × 0.239006 = 119.503 calories).
How to use this converter?
Enter joules and get calories instantly—useful in physics, chemistry, and energy calculations (note: food Calories are usually kilocalories).
Common Joules to Calories Conversions
Quick reference guide for popular joule values.
1 J = 0.2390 cal
10 J = 2.3901 cal
50 J = 11.9503 cal
100 J = 23.9006 cal
250 J = 59.7515 cal
500 J = 119.503 cal
1000 J = 239.006 cal
2000 J = 478.012 cal
5000 J = 1195.03 cal
10000 J = 2390.06 cal
History: Joules and calories
The joule (J) is the SI unit of energy. The calorie (cal) is an older unit often used in chemistry and nutrition contexts. On food labels, “Calorie” usually means kilocalorie (kcal).
Common Joules to Calories Conversions
| Joules Input | Calories Result |
|---|---|
| 1 J | 0.2390 cal |
| 10 J | 2.3901 cal |
| 50 J | 11.9503 cal |
| 100 J | 23.9006 cal |
| 250 J | 59.7515 cal |
| 500 J | 119.503 cal |
| 1000 J | 239.006 cal |
| 2000 J | 478.012 cal |
| 5000 J | 1195.03 cal |
| 10000 J | 2390.06 cal |
Frequently Asked Questions
How do I convert joules to calories?
Multiply joules by 0.239006 to get calories.
How many calories is 1000 joules?
1000 joules equals 239.006 calories.
How many joules are in 1 calorie?
1 calorie equals 4.184 joules.
Is a food Calorie the same as a calorie (cal)?
Not exactly. Food “Calories” usually mean kilocalories (kcal), which are 1000 calories (cal).
Is the conversion exact?
The relationship 1 cal = 4.184 J is the standard used for conversions; rounding depends on decimals shown.