Convert calorie (cal) to joule (J).
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Joule to Calorie Converter (J to cal)
Convert joule (J) to calorie (cal).Unit Converter · Energy
Quick answer
1 joule (J) is approximately equal to 0.2390057 calories (cal). 1 calorie (cal) is equal to 4.184 joules (J).
To convert J to cal, multiply the value in joules by 0.2390057361 (or divide by 4.184). For example, 10 J = 2.39005736 cal, and 100 J = 23.90057361 cal.
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Quick reference — joule to calorie
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How to convert joules to calories
How many calories are in a joule? 1 joule is about 0.2390057 calories. This free J to cal converter and joule to calorie calculator gives the answer instantly for any value.
To convert joule (J) to calorie (cal), multiply the value in joules by 0.2390057361, or divide it by 4.184.
cal = J × 0.2390057361
- 1
Take the value in joules
For example, 25 J.
- 2
Multiply by 0.2390057361
25 × 0.2390057361.
- 3
Read the answer in calories
25 J = 5.9751434 cal.
Joule to Calorie conversion table
Common values from 1 to 1,000 joules converted to calories.
| Joule (J) | Calorie (cal) |
|---|---|
| 1 J | 0.23900574 cal |
| 2 J | 0.47801147 cal |
| 3 J | 0.71701721 cal |
| 4 J | 0.95602294 cal |
| 5 J | 1.19502868 cal |
| 6 J | 1.43403442 cal |
| 7 J | 1.67304015 cal |
| 8 J | 1.91204589 cal |
| 9 J | 2.15105163 cal |
| 10 J | 2.39005736 cal |
| 15 J | 3.58508604 cal |
| 20 J | 4.78011472 cal |
| 25 J | 5.9751434 cal |
| Joule (J) | Calorie (cal) |
|---|---|
| 30 J | 7.17017208 cal |
| 40 J | 9.56022945 cal |
| 50 J | 11.95028681 cal |
| 60 J | 14.34034417 cal |
| 70 J | 16.73040153 cal |
| 75 J | 17.92543021 cal |
| 80 J | 19.12045889 cal |
| 90 J | 21.51051625 cal |
| 100 J | 23.90057361 cal |
| 250 J | 59.75143403 cal |
| 500 J | 119.50286807 cal |
| 1,000 J | 239.00573614 cal |
About joules and calories
Joule (J)
The joule (J) is the SI unit of energy: the work done by a force of one newton over one meter. One watt is one joule per second.
Calorie (cal)
A calorie (cal) here is the thermochemical calorie, exactly 4.184 joules. Food "Calories" are kilocalories, a thousand times larger.
J to cal: common questions
- How many calories are in 1 joule?
- 1 joule (J) is approximately equal to 0.2390057 calories (cal). In short: 1 J ≈ 0.2390057 cal.
- How do I convert joules to calories?
- To convert J to cal, multiply the value in joules by 0.2390057361 (or divide by 4.184). For example, 5 J = 1.19502868 cal.
- How do I convert calories to joules?
- To convert cal to J, multiply the value in calories by 4.184. Or open the Calorie to Joule converter, which does it for you.
- What is 10 J in cal, and what is 100 J?
- 10 J = 2.39005736 cal, and 100 J = 23.90057361 cal. The table above lists more values from 1 to 1,000.
- Is this J to cal converter accurate?
- Yes. It uses the exact conversion factor and shows results to as many as 8 decimal places, so you can rely on it for study, work and everyday measuring.
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