Joules to Calories
Convert Joules to Calories with an exact factor. One joule equals 0.23900574 Calories.
Result0.23900574
How to convert Joules to Calories
The converter above changes Joules into Calories instantly. As a reference point, one joule corresponds to 0.23900574 Calories, and one calorie corresponds to 4.184 Joules. Use the table below for common values.
Joules × 0.23900574 = Calories
For example, 5 Joules = 1.19502868 Calories.
About the units
- Joules (J) — The SI unit of energy.
- Calories (cal) — A calorie, 4.184 joules.
Joules to Calories conversion table
| Joules | Calories |
|---|---|
| 1 J | 0.23900574 cal |
| 2 J | 0.47801147 cal |
| 3 J | 0.71701721 cal |
| 5 J | 1.19502868 cal |
| 10 J | 2.39005736 cal |
| 20 J | 4.78011472 cal |
| 25 J | 5.9751434 cal |
| 50 J | 11.95028681 cal |
| 100 J | 23.90057361 cal |
| 250 J | 59.75143403 cal |
| 500 J | 119.50286807 cal |
| 1,000 J | 239.00573614 cal |
Calories to Joules conversion table
| Calories | Joules |
|---|---|
| 1 cal | 4.184 J |
| 2 cal | 8.368 J |
| 3 cal | 12.552 J |
| 5 cal | 20.92 J |
| 10 cal | 41.84 J |
| 20 cal | 83.68 J |
| 25 cal | 104.6 J |
| 50 cal | 209.2 J |
| 100 cal | 418.4 J |
| 250 cal | 1,046 J |
| 500 cal | 2,092 J |
| 1,000 cal | 4,184 J |
Frequently asked questions
How many Calories is one joule?
One joule is 0.23900574 Calories.
Are these energy conversions accurate?
Yes. They use the exact standard unit definitions, so results are accurate to the number of decimals shown.
What is the formula to convert Joules to Calories?
Multiply the number of Joules by 0.23900574. To convert back, multiply Calories by 4.184.
This tool is provided for general information only. Verify important figures independently. · Last reviewed: August 25, 2026