Energy conversion

Energy conversion is a free online calculator for converting metric and imperial units of energy. Conversion between joule, Btu, foot-pound force, horsepower-hour, kilowatt-hour, electronvolt, calorie, kilocalorie...
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gigaelectronvolt (GeV) - unit of energy. 1 GeV = 1.6021773e-10 joule
Energy conversion is a free online service for converting units of energy