Joules to calories converter
Calories (cal)
1 joule = 0.2390057361 calories
How to convert joules to calories
cal = J × 0.239005736138
Multiply the number of joules by 0.239005736138 to get calories. Going the other way, divide by 0.239005736138 (or multiply by 4.184).
One joule is exactly defined as 0.239005736138 calories (to 12 significant figures), and one calorie is 4.184 joules.
Worked examples
- Convert 5 joules: 5 × 0.239005736138 = 1.195028681 1.195028681 calories.
- Convert 12.5 joules: 12.5 × 0.239005736138 = 2.987571702 2.987571702 calories.
- Convert 250 joules: 250 × 0.239005736138 = 59.75143403 59.75143403 calories.
Quick-reference table
| J | cal |
|---|---|
| 1 | 0.2390057361 |
| 2 | 0.4780114723 |
| 3 | 0.7170172084 |
| 5 | 1.195028681 |
| 10 | 2.390057361 |
| 15 | 3.585086042 |
| 20 | 4.780114723 |
| 25 | 5.975143403 |
| 50 | 11.95028681 |
| 75 | 17.92543021 |
| 100 | 23.90057361 |
| 1,000 | 239.0057361 |
| cal | J |
|---|---|
| 1 | 4.184 |
| 2 | 8.368 |
| 3 | 12.552 |
| 5 | 20.92 |
| 10 | 41.84 |
| 15 | 62.76 |
| 20 | 83.68 |
| 25 | 104.6 |
| 50 | 209.2 |
| 75 | 313.8 |
| 100 | 418.4 |
| 1,000 | 4,184 |
Related conversions
Frequently asked questions
How many calories are in 1 joule?
1 joule equals 0.2390057361 calories.
What is the formula to convert joules to calories?
Use cal = J × 0.239005736138. Multiply the number of joules by 0.239005736138 to get calories. Going the other way, divide by 0.239005736138 (or multiply by 4.184).
What is 100 joules in calories?
100 joules is 23.90057361 calories.