Energy Converter
Convert joules, calories and kilowatt-hours.
How to use Energy Converter
Convert joules, calories and kilowatt-hours.
Select the source and destination units. Results are rounded to about 12 significant digits.
- Open Energy Converter on Tools4U.
- Paste content and choose your units, or import a supported text file.
- Select Convert and review the output.
- Copy the result or download the converted file.
Frequently asked questions
Is Energy Converter free?
Yes. Verified Tools4U accounts can use the converter for free. Premium members do not see advertisements.
Are my files stored?
The text is processed on a private worker and returned directly without saving generated files to disk. Do not upload sensitive information without permission.
What is the input limit?
600,000 characters, with a 1.8 MB output limit. Large spreadsheets and complex binary documents require dedicated Office/Image/PDF tools.