Energy
Kilocalories to Kilojoule
Convert kilocalories to kilojoule instantly.
About this conversion
Kilocalories (kcal) — commonly called "calories" — are used on food labels and in dietary calculations. Kilojoule (kJ) = 1.000 J. EU-madevaredeklarationer skal angive energiindhold i kJ. En voksen har et dagsbehov på ca. 8.400 kJ, en banan indeholder ca. 370 kJ, og et glas appelsinjuice ca. 450 kJ. 1 Kilocalories equals 4.184 kilojoule. The converter above calculates the result instantly — you can also swap the units to convert in the other direction.
How to use
Enter a value in the kilocalories field and instantly see the result in kilojoule. Click the swap button to reverse the conversion.
Manual calculation
1 kilocalories = 4.184 kilojoule. Example: 10 kcal = 41.84 kJ.
Frequently asked questions
How do you convert kilocalories to kilojoule?
Multiply the number of kilocalories by 4.184 to get kilojoule. Example: 10 kcal × 4.184 = 41.84 kJ.
Are kilocalories bigger or smaller than kilojoule?
Kilocalories is larger than Kilojoule. One kilocalorie equals 4.184 kilojoule, so the result is a larger number when converting from kilocalories to kilojoule.
What is 5 kilocalories in kilojoule?
5 kcal equals 20.92 kJ.
How many kilocalories are in 1 kilojoule?
1 kJ equals 0.23901 kcal. This is the reverse conversion — useful if you have a value in kilojoule and want it in kilocalories.
What is kilocalorie?
Kilocalories (kcal) — commonly called "calories" — are used on food labels and in dietary calculations.
What is kilojoule used for?
Kilojoule (kJ) = 1.000 J. EU-madevaredeklarationer skal angive energiindhold i kJ. En voksen har et dagsbehov på ca. 8.400 kJ, en banan indeholder ca. 370 kJ, og et glas appelsinjuice ca. 450 kJ.