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Power Converter
ConverterConvert watts, kilowatts, horsepower, BTU/hr, and other power units.
About This Tool
The watt (W) is the SI unit for power, named after James Watt. One mechanical horsepower equals exactly 745.7 watts. Air conditioners in the US are rated in BTUs per hour; 12,000 BTU/hr equals 1 ton of cooling capacity.