Energy Converter Convert energy between watt-hour, kilowatt-hour, megawatt-hour, gigawatt-hour, joule, kilojoule. Type a value in any of the below fields to automatically convert between different energy measurements. Watt-hour Kilowatt-hour Megawatt-hour Gigawatt-hour Joule Kilojoule Reset Related Tools Time Converter Speed Converter Pressure Converter Length Converter Weight Converter Baking Units Converter Temperature Converter Internet Speed Converter