Joule to Calorie Converter
Convert joule to calorie instantly.
Standard energy units
kilojoule 0.1
calorie 23.901
kilocalorie 0.0239
watt-hour 0.0278
kilowatt-hour 0
BTU 0.0948
Fun comparisons
apples eaten 🍎~ Less than 0.01
hours of 100W bulb 💡~ Less than 0.01
marathons run 🏃~ Less than 0.01
full car tanks of fuel ⛽~ Less than 0.01
How to convert joule to calorie
Enter your energy value in joule and see the result in calorie instantly. Key reference points: 1 food Calorie equals 1 kcal (4.184 kJ), and 1 kilowatt-hour equals 3600 kJ (860 kcal).
Joule is the SI unit of energy; calorie (small calorie) is the amount of heat needed to raise 1 gram of water by 1°C and is used in chemistry. One calorie equals 4.184 joules.
Need the opposite direction? Convert calorie to joule just as easily, or explore all our energy conversions.
Common joule to calorie conversions
| Joule (J) | Calorie (cal) |
|---|---|
| 1 | 0.239006 |
| 5 | 1.19503 |
| 10 | 2.39006 |
| 25 | 5.97514 |
| 50 | 11.9503 |
| 100 | 23.9006 |
| 500 | 119.503 |
| 1000 | 239.006 |
Frequently asked questions
1 joule equals 0.239006 calorie.
Multiply by 0.239006. For example, 5 J = 1.19503 cal.
1000 joules equals approximately 239 calories.
1 calorie equals 4.184 joule.
100 joule equals 23.9006 calorie.