File ConversionUnit ConversionFree Tool
Energy Converter
Convert energy between Joules, Calories, kWh, and BTU using standard conversion factors.
How to Use Energy Converter
- 1Enter the value to convert
- 2Select the source unit
- 3Select the target unit
- 4See the instant result
Frequently Asked Questions
Joules, Calories, kWh (kilowatt-hours), and BTU (British Thermal Units).
Standard published conversion factors (1 kWh = 3,600,000 Joules, 1 Calorie = 4.184 Joules) with results shown to 6 decimal places.
No — the calculation happens entirely in your browser.
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