Power Converter
Engines, appliances and output.
Runs on your device
At a glance
- Processing:
- Runs locally in your browser
- Privacy:
- Your files stay on your device — nothing is uploaded to a server
About this tool
Convert milliwatts, watts, kilowatts, megawatts, metric horsepower, imperial horsepower and BTU/hour. Clarifies engine specs and appliance ratings.
How to use it
- Enter the power.
- Pick source and target units.
- Compare instantly.
Good to know
- Horsepower has metric (735.5 W) and mechanical/imperial (745.7 W) definitions — the tool lets you pick explicitly.
Frequently asked questions
How do I convert power values?
Enter a value, pick the source and target units, and read the result instantly. For example: 100 hp (metric) = 73.55 kW. All math runs locally in your browser.
Is my data uploaded or stored?
No. Unit conversion is pure arithmetic in your browser — nothing is sent, uploaded or stored.
How precise are the results?
Conversions use double-precision factors and display up to 6 significant decimals with trailing zeros stripped, so everyday and technical values both stay accurate.