A watt is one joule per second. A kilowatt-hour is a unit of energy, not power: operating a 1 kW device for one hour uses 1 kWh of energy. Always identify whether a label refers to a capacity, an instantaneous rate, or accumulated use over time.
Important note
The calculation is performed locally from the listed unit definitions. Display results are rounded for readability; high-precision and regulated work should use the governing standard and appropriate significant figures.
Related conversions: Length, Mass & weight, Temperature, Digital storage, Energy, Power.
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