Power Converter

Convert power: watts, kilowatts, megawatts, mechanical and metric horsepower and BTU per hour.

kW = W × 0.001

Frequently asked questions

How accurate is this power converter?

It uses the exact defined conversion factors for each unit and shows results to 10 significant digits. Mechanical (imperial) horsepower is 550 ft·lbf/s = 745.69987 W. Metric horsepower (PS) is exactly 735.49875 W.

How do I convert watts to kilowatts?

Enter the value, choose watts in the "From" list and kilowatts in the "To" list. For example, 1 watt equals 0.001 kW.

Is the converter free?

Yes. It is free, needs no sign-up and runs entirely in your browser, so it also works offline once the page has loaded.

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