Energy Converter
Fill in the values and the answer updates as you type.
How the Energy Converter works
Converts through joules. 1 calorie = 4.184 J, and food "Calories" are kilocalories.
Inputs and results
The Energy Converter takes 3 inputs and gives 1 result.
What you enter
- Value — starts at 100.
- From — starts at kilocalorie. Choose from: joule, kilojoule, calorie, kilocalorie, watt-hour and kilowatt-hour.
- To — starts at kilojoule. Choose from: joule, kilojoule, calorie, kilocalorie, watt-hour and kilowatt-hour.
What you get
- Converted value
Example: Energy Converter with the starting values
With value 100, from kilocalorie and to kilojoule, the calculator returns:
| Converted value | 418.4 |
|---|
Change any value above and the results update straight away.
Energy Converter FAQ
How do I use the Energy Converter?
Enter value, from and to in the fields, then read converted value in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Energy Converter calculate?
Convert joules, calories, watt-hours, and kilowatt-hours. It returns converted value from the 3 values you provide.
What values does the Energy Converter start with?
It opens with value 100, from kilocalorie and to kilojoule so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Energy Converter free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Energy Converter for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.