Calories to Joules Converter
1 Calorie = 4.184 Joules
cal
J
1 cal = 4.184 J. To convert calories to joules, multiply by 4.184; to convert back, multiply by 0.239006.
Conversion formula
1 cal = 4.184 J
To convert from Calories to Joules, multiply the value in calories by 4.184.
| Calories (cal) | Joules (J) |
|---|---|
| 0.001 | 0.004184 |
| 0.01 | 0.04184 |
| 0.1 | 0.4184 |
| 1 | 4.184 |
| 2 | 8.368 |
| 5 | 20.92 |
| 10 | 41.84 |
| 25 | 104.6 |
| 50 | 209.2 |
| 100 | 418.4 |
| 250 | 1,046 |
| 500 | 2,092 |
| 1000 | 4,184 |
1 calorie in every energy unit
| Joules | 4.184 J |
| Kilojoules | 0.004184 kJ |
| Megajoules | 0.000004184 MJ |
| Kilocalories | 0.001 kcal |
| Watt-hours | 0.00116222 Wh |
| Kilowatt-hours | 0.00000116222 kWh |
| British Thermal Units | 0.00396567 BTU |
Frequently Asked Questions
How many joules are in 1 calorie?
1 calorie equals 4.184 joules. So 10 calories are 41.84 joules and 100 calories are 418.4 joules.
How do I convert calories to joules by hand?
Multiply the number of calories by 4.184. To go the other way, multiply joules by 0.239006 (or divide by 4.184).
How many calories are in 1 joule?
1 joule equals 0.239006 calories.