Units & Numbers Tools
Power Converter
Convert between watts, horsepower, kilowatts, and BTUs per hour.
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What is Power?
A power converter for electrical watts and engineering/automotive units, including both metric and mechanical horsepower.
How it works
Everything normalizes to watts; horsepower variants use their exact definitions (735.5 W metric, 745.7 W mechanical).
- Enter your input. Type or paste your input into the field above — the tool responds instantly.
- Review the result. Output updates live as you type. Everything runs entirely in your browser.
- Copy or download. Use the Copy button to grab the result, or Download to save it as a file.
Examples
Realistic sample
Paste or type any realistic input — the tool computes the result locally and instantly.
Common mistakes
Expecting a server round-trip
Nothing is uploaded — every tool in this category runs entirely in your browser.