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Power Converter

Convert between watts, horsepower, BTU/hour, and other power units.

Tips for Using This Calculator

• All calculations are performed instantly as you type

• Use the copy button to save your results

• Results are automatically shared in the URL for easy sharing

• This calculator works completely offline after loading

How many watts in a horsepower?

What's the difference between kW and kWh?

Energy Converter

Convert between joules, calories, BTU, kWh, and other energy units.

Last updated: 2/22/2026