Joule to Calorie Calculator
Convert energy from Joules (J) to Calories (cal)
How to Convert Joules to Calories
To convert joules (J) to calories (cal), use the conversion factor: 1 calorie = 4.184 joules. So, to convert from joules to calories, divide the number of joules by 4.184.
Conversion Formula
Note: 1 joule = 0.239 calories
Joules (J)
The joule is the standard unit of energy in the International System of Units (SI). It represents the amount of energy transferred or work done. For instance, 1 joule is roughly the energy required to lift a small apple (about 100 grams) one meter against gravity. It’s a fundamental unit used in physics, engineering, and other sciences.
Calories (cal)
A calorie is a unit of energy originally defined as the amount of heat needed to raise the temperature of 1 gram of water by 1°C. It’s commonly used in nutrition and chemistry. One calorie is a relatively small unit, so in everyday contexts (like food energy), people often use kilocalories (kcal), where 1 kcal = 1,000 cal, though they might just say “calories” informally.
Joules to Calories Conversion Table (J to cal)
| Joule [J] | Calorie [cal] |
|---|---|
| 1 J | 0.239005736 cal |
| 10 J | 2.39005736 cal |
| 100 J | 23.9005736 cal |
| 500 J | 119.502736 cal |
| 1000 J | 239.005736 cal |
| 5000 J | 1195.02736 cal |
| 10000 J | 2390.05736 cal |
| 50000 J | 11950.2736 cal |
| 100000 J | 23900.5736 cal |
FAQs
What is the relationship between Joules and Calories?
1 calorie (cal) is equivalent to 4.184 Joules (J).
Conversely, 1 Joule = 0.239 cal.
How do I convert Joules to Calories?
To convert Joules to Calories, divide the energy in Joules by 4.184.
Formula: cal = J 4.184
Why are Calories used in some contexts instead of Joules?
Calories are traditionally used in food science, thermodynamics, and chemistry for convenience, especially when dealing with energy on a smaller scale.
