Energy Converter

Convert between joules, calories, kilocalories, watt-hours, kilowatt-hours, BTU, electronvolts, and other energy units.

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Instructions

Enter an energy amount, choose the source and target units, and press Convert.

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About energy conversions

The Energy Converter uses the shared Calculator.com conversion layer for the conversion math. This page is locked to energy units and labels calorie and BTU variants explicitly where GNU Units provides separate definitions.

Energy Converter FAQs

Are energy conversions calculated in JavaScript?

No. JavaScript only updates the interface and sends the conversion request. The server validates the selected units and calls GNU Units.

What is the difference between calorie and kilocalorie?

The calorie entry is the small calorie. The kilocalorie is the food Calorie commonly used for nutrition labels.

Credits

Energy Converter

Version: 0.1

Author: Calculator.com