Energy
Kilocalories to Joule
Convert kilocalories to joule instantly.
About this conversion
Kilocalories (kcal) — commonly called "calories" — are used on food labels and in dietary calculations. Joule (J) er SI-grundenheden for energi og bruges i fysik, kemi og teknik. At løfte et æble én meter kræver ca. 1 joule, og en menneskekrops daglige energibehov er ca. 8 millioner joule. 1.000 joule er én kilojoule. 1 Kilocalories equals 4,184 joule. 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 joule. Click the swap button to reverse the conversion.
Manual calculation
1 kilocalories = 4,184 joule. Example: 10 kcal = 41,840 J.
Frequently asked questions
How do you convert kilocalories to joule?
Multiply the number of kilocalories by 4,184 to get joule. Example: 5 kcal × 4,184 = 20,920 J.
Are kilocalories bigger or smaller than joule?
Kilocalories is larger than Joule. One kilocalorie equals 4,184 joule, so the result is a larger number when converting from kilocalories to joule.
What is 2 kilocalories in joule?
2 kcal equals 8,368 J.
How many kilocalories are in 1 joule?
1 J equals 0.00023901 kcal. This is the reverse conversion — useful if you have a value in joule and want it in kilocalories.
What is kilocalorie?
Kilocalories (kcal) — commonly called "calories" — are used on food labels and in dietary calculations.
What is joule used for?
Joule (J) er SI-grundenheden for energi og bruges i fysik, kemi og teknik. At løfte et æble én meter kræver ca. 1 joule, og en menneskekrops daglige energibehov er ca. 8 millioner joule. 1.000 joule er én kilojoule.