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Energy Converter
Convert between different energy units
Free to use, no watermarks, runs in your browser—nothing uploads to our servers
This is the unit for the number you entered.
- Joule (J)
- Kilojoule (kJ)
- Calorie (cal)
- Kilocalorie (kcal)
- Kilowatt-hour (kWh)
- British Thermal Unit (BTU)
Pick the output unit for the conversion.
Result
Enter a value and pick both units to see the converted result.
Report a bug
If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.