Joule to Calorie (thermochemical) Converter
1 joule is about 0.2390057361 calories. Convert joules (J) to calories (cal) below: type a value and the result updates as you type.
J to cal calculator
Result
Joule to Calorie (thermochemical) conversion
1 J ≈ 0.2390057361 calone joule in calories
1 cal = 4.184 Jone calorie in joules
Joule (J): SI derived unit: one newton-meter.
Calorie (thermochemical) (cal): Thermochemical calorie: exactly 4.184 joules.
Source:Joule: SI Brochure, 9th edition (BIPM, 2019); Calorie (thermochemical): NIST Special Publication 811 (2008), Appendix B.8
How to convert joules to calories
To convert joules to calories, divide the number of joules by 4.184.
Formula
cal = J ÷ 4.184
Examples
- 5 J = 5 ÷ 4.184 ≈ 1.195028681 cal
- 25 J = 25 ÷ 4.184 ≈ 5.975143403 cal
- 100 J = 100 ÷ 4.184 ≈ 23.90057361 cal
Joule to Calorie (thermochemical) conversion table
| Joule (J) | Calorie (thermochemical) (cal) |
|---|---|
| 0.1 J | 0.02390057361 cal |
| 0.5 J | 0.1195028681 cal |
| 1 J | 0.2390057361 cal |
| 2 J | 0.4780114723 cal |
| 3 J | 0.7170172084 cal |
| 5 J | 1.195028681 cal |
| 10 J | 2.390057361 cal |
| 20 J | 4.780114723 cal |
| 25 J | 5.975143403 cal |
| 50 J | 11.95028681 cal |
| 100 J | 23.90057361 cal |
| 250 J | 59.75143403 cal |
| 500 J | 119.5028681 cal |
| 1000 J | 239.0057361 cal |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- How many calories are in one joule?
- One joule is about 0.2390057361 calories.
- How do I convert calories to joules?
- To convert calories to joules, multiply the number of calories by 4.184. The formula is J = cal × 4.184.
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 4.184 is exact. Displayed results are only rounded when they have many decimal places.
- Which is larger, a joule or a calorie?
- A calorie is 4.184 times larger than a joule. In other words, a joule is about 0.2390057361 of a calorie.