Convert Calories to Kilojoules
Convert calories to kilojoules (cal to kJ) instantly. Free, accurate calories to kilojoules calculator with conversion formula and chart.
1 cal = 0.004184 kJ
About Calories to Kilojoules
Easily convert calories (cal) to kilojoules (kJ) with this free, instant calculator. Enter a value in calories to see the equivalent in kilojoules right away — accurate and calculated in your browser.
How to use Calories to Kilojoules
Enter the number of calories you want to convert.
The equivalent value in kilojoules appears instantly.
Switch units anytime to convert in either direction.
How to convert Calories to Kilojoules
Enter any value in calories (cal) and this calculator instantly shows the equivalent in kilojoules (kJ) using the exact internationally agreed conversion factor — no rounding tricks, no ads in the way, and it works offline once the page is loaded.
Use the swap button to convert in the other direction (kilojoules to calories), or switch to any other energy unit from the dropdown — the same page handles joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, btu, electronvolts.
Frequently Asked Questions
How do you convert calories to kilojoules?+
Enter your value in calories and the converter instantly shows the result in kilojoules using the exact conversion factor.
Is the calories to kilojoules converter free?+
Yes — it's completely free, instant and requires no sign-up.
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