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Energy Converter

Convert between 8 energy units including Joules, calories, kWh, BTU, and electronvolts

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About This Tool

Energy Converter is an online tool that converts between 8 energy units: Joules, kilojoules, calories, kilocalories, kilowatt-hours, BTU, electronvolts, and foot-pounds. It features a swap button for quick unit reversal, displays all conversions in a grid, and includes a common energy references table for quick comparison.

Key Features

Quick Preview

Use Cases

energy converter units

Frequently Asked Questions

What is the Energy Converter?

The Energy Converter is an online tool that converts between 8 energy units: Joules, kilojoules, calories, kilocalories, kilowatt-hours, BTU, electronvolts, and foot-pounds. It shows all conversions at once with a reference table.

What energy units are supported?

The tool supports 8 energy units: J (Joules), kJ (kilojoules), cal (calories), kcal (kilocalories), kWh (kilowatt-hours), BTU (British Thermal Units), eV (electronvolts), and ft·lb (foot-pounds).

Does it show all conversions at once?

Yes, when you enter a value and select a source unit, the tool displays the converted value in all 7 other units simultaneously in a grid layout. You can also copy individual results.

Is my data safe when using the Energy Converter?

Absolutely. All processing happens locally in your browser. No data is uploaded to any server, ensuring your information remains completely private and secure.

Can I use the Energy Converter on my phone?

Yes, the Energy Converter is fully responsive and works on all devices including smartphones, tablets, and desktop computers.