What is the Kcal to Kj Converter?
Convert kilocalories to kilojoules instantly, with the conversion factor and a table of other units.
Results update as you type, and nothing you enter leaves your device.
How it is calculated
kilojoules = kilocalories × 4.184
How to use it
- Fill in the fields at the top of the page.
- Read the result in the results panel. It updates as you type.
- Change any value to compare scenarios, or use Share to send the result as a link.
Common questions
How do I convert kilocalories to kilojoules?
Multiply the value in kilocalories by 4.184. For example, 10 kilocalories = 41.84 kilojoules.
How do I convert kilojoules back to kilocalories?
Divide by 4.184, or press the swap button between the two unit boxes.
What formula does the Kcal to Kj Converter use?
It uses: kilojoules = kilocalories × 4.184.
Is the Kcal to Kj Converter free, and is my data stored?
It is free with no sign-up. The calculation runs in your browser, so the values you enter are not sent to or stored on our server.