Kilojoule to Calorie Converter
Convert kilojoule to calorie instantly.
Standard energy units
joule 100000
calorie 23900.574
kilocalorie 23.901
watt-hour 27.778
kilowatt-hour 0.0278
BTU 94.781
Fun comparisons
apples eaten 🍎~ 0.29
hours of 100W bulb 💡~ 0.28
marathons run 🏃~ 0.03
full car tanks of fuel ⛽~ Less than 0.01
How to convert kilojoule to calorie
Enter your energy value in kilojoule 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).
Kilojoule is used on food labels in Australia and the EU; calorie is the small unit used in chemistry and older nutrition contexts. One kilojoule equals approximately 239 calories.
Need the opposite direction? Convert calorie to kilojoule just as easily, or explore all our energy conversions.
Common kilojoule to calorie conversions
| Kilojoule (kJ) | Calorie (cal) |
|---|---|
| 1 | 239.006 |
| 5 | 1195.03 |
| 10 | 2390.06 |
| 25 | 5975.14 |
| 50 | 11950.3 |
| 100 | 23900.6 |
| 500 | 119503 |
| 1000 | 239006 |
Frequently asked questions
1 kilojoule equals 239.006 calorie.
Multiply by 239.006. For example, 5 kJ = 1195.03 cal.
1 kilojoule equals approximately 239 calories.
1 calorie equals 0.004184 kilojoule.
100 kilojoule equals 23900.6 calorie.