⚡ Energy converter
Joules to Calories Converter
Convert joules (J) to calories (cal) instantly. Includes formula, worked example, and a full reference chart from 1 to 1000 J.
Joules
J
Calories
cal
How to convert joules to calories
One joule equals approximately 0.239 thermochemical calories. To convert joules to calories, divide the joule value by 4.184.
Formula
cal = J ÷ 4.184
Worked example
Convert 1000 J to cal:
1000 J × 0.2390057361376673 → 239.005736 cal
1000 J × 0.2390057361376673 → 239.005736 cal
Common joules to calories values
Quick reference for common joule values:
- 1 J = 0.239006 cal
- 5 J = 1.195029 cal
- 10 J = 2.390057 cal
- 100 J = 23.900574 cal
Joules to Calories conversion table
Full reference chart — useful for cooking, fitness, engineering, or homework.
| Joules | Calories |
|---|---|
| 1 J | 0.239006 cal |
| 2 J | 0.478011 cal |
| 3 J | 0.717017 cal |
| 5 J | 1.195029 cal |
| 10 J | 2.390057 cal |
| 20 J | 4.780115 cal |
| 25 J | 5.975143 cal |
| 50 J | 11.950287 cal |
| 75 J | 17.92543 cal |
| 100 J | 23.900574 cal |
| 250 J | 59.751434 cal |
| 500 J | 119.502868 cal |
| 1000 J | 239.005736 cal |
Calories to Joules table (reverse)
Looking the other way? Here's the reverse conversion:
| 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 |
| 75 cal | 313.8 J |
| 100 cal | 418.4 J |
| 250 cal | 1,046 J |
| 500 cal | 2,092 J |
| 1000 cal | 4,184 J |
Frequently asked questions
How many calories are in 1 joule?
There are 0.239006 cal in 1 J.
How many calories are in 10 joules?
10 J = 2.390057 cal.
How many joules are in 1 calorie?
1 cal = 4.184 J.
What is the formula to convert joules to calories?
The formula is cal = J ÷ 4.184.