PrismKitUnitsEnergy ConverterEnergy ConverterRuns in your browserLocalCopy linkMarkdownMove between joules, calories, watt-hours, BTU, electronvolts and foot-pounds.Pressure ConverterConvert pascals, bar, atmospheres, psi, torr and inches of mercury in one view.Power ConverterCompare watts, kilowatts, mechanical and metric horsepower, and BTU per hour.