Kilocalories to Kilojoules
Convert kilocalories (kcal) to kilojoules (kJ). Type in either box; the other updates as you go.
How to convert kilocalories to kilojoules
To convert kilocalories to kilojoules, multiply the number of kilocalories by 4.184.
Example
Convert 5 kilocalories to kilojoules:
Kilocalorie to kilojoule conversion chart
| Kilocalories (kcal) | Kilojoules (kJ) |
|---|---|
| 1 kcal | 4.184 kJ |
| 2 kcal | 8.368 kJ |
| 3 kcal | 12.552 kJ |
| 4 kcal | 16.736 kJ |
| 5 kcal | 20.92 kJ |
| 6 kcal | 25.104 kJ |
| 7 kcal | 29.288 kJ |
| 8 kcal | 33.472 kJ |
| 9 kcal | 37.656 kJ |
| 10 kcal | 41.84 kJ |
| 12 kcal | 50.208 kJ |
| 15 kcal | 62.76 kJ |
| 20 kcal | 83.68 kJ |
| 25 kcal | 104.6 kJ |
| 30 kcal | 125.52 kJ |
| 40 kcal | 167.36 kJ |
| 50 kcal | 209.2 kJ |
| 60 kcal | 251.04 kJ |
| 70 kcal | 292.88 kJ |
| 75 kcal | 313.8 kJ |
| 80 kcal | 334.72 kJ |
| 90 kcal | 376.56 kJ |
| 100 kcal | 418.4 kJ |
| 150 kcal | 627.6 kJ |
| 200 kcal | 836.8 kJ |
| 250 kcal | 1,046 kJ |
| 500 kcal | 2,092 kJ |
| 1,000 kcal | 4,184 kJ |
Going the other way? See the kilojoules to kilocalories chart.
About the units
Kilocalorie (kcal)
A kilocalorie is 1,000 small calories. The "Calories" on US food labels are kilocalories.
Kilojoule (kJ)
A kilojoule is 1,000 joules. Food labels in Australia and Europe give energy in kJ next to kcal.
Frequently asked questions
How many kilojoules are in a kilocalorie?
There are 4.184 kilojoules in a kilocalorie.
How many kilocalories are in a kilojoule?
There are 0.2390057361 kilocalories in a kilojoule.
How do you convert kilocalories to kilojoules?
To convert kilocalories to kilojoules, multiply the number of kilocalories by 4.184.
What is 5 kilocalories in kilojoules?
5 kilocalories equals 20.92 kilojoules.
Convert between joules, calories, kilocalories, kilowatt-hours and BTU. Open the energy converter to see a value in every unit at once.