Joule to Calorie Converter
1 Joule = 0.23900574 Calories. To convert Joules to Calories, multiply by 0.23900574.
Result updates as you type
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1 Joule = 0.23900574 Calorie
Formula
To convert Joules to Calories, multiply the value by 0.23900574. One Joule equals 0.23900574 Calories.
cal = J × 0.23900574
For a quick mental estimate, divide Joules by about 4.2 — precisely, one Calorie is 4.184 Joules.
Worked examples
- 1 Joule = 0.23900574 Calories
- 5 Joules = 1.195 Calories
- 10 Joules = 2.3901 Calories
- 100 Joules = 23.9006 Calories
Joules to Calories table
| Joules (J) | Calories (cal) |
|---|---|
| 1 | 0.23900574 |
| 2 | 0.47801147 |
| 3 | 0.71701721 |
| 4 | 0.95602294 |
| 5 | 1.195 |
| 10 | 2.3901 |
| 25 | 5.9751 |
| 50 | 11.9503 |
| 100 | 23.9006 |
| 250 | 59.7514 |
| 500 | 119.5029 |
| 1000 | 239.0057 |
About Joule and Calorie
Both the Joule (J) and the Calorie (cal) measure energy. One Joule is equal to 0.23900574 Calories, so you can convert any measurement by multiplying by 0.23900574. The calculator above updates instantly, and the reference table lists common Joule-to-Calorie values for quick lookups.
Unit definitions
- Joule (J)
- The Joule (J) is the reference unit for energy in this converter — every other energy unit is defined relative to it.
- Calorie (cal)
- The Calorie (cal) is a unit of energy equal to 4.184 Joules.
Frequently asked questions
- How do you convert Joules to Calories?
- Multiply the number of Joules by 0.23900574. For example, 1 Joule × 0.23900574 = 0.23900574 Calories.
- How many Calories are in a Joule?
- There are 0.23900574 Calories in one Joule.
- What is 10 Joules in Calories?
- 10 Joules is equal to 2.3901 Calories.
- How do you convert Calories back to Joules?
- Multiply the number of Calories by 4.184 to get Joules. One Calorie equals 4.184 Joules.