Watts to Horsepower Converter

Summary

Enter watts and instantly see the equivalent in mechanical, electrical, and metric horsepower — plus a reverse mode and reference table.

How it works

1. Enter a watt value in the input field.
2. The tool divides the watt value by each conversion factor: 745.69987 W/hp for mechanical, 746 W/hp for electrical, and 735.49875 W/PS for metric.
3. All three horsepower results appear simultaneously.
4. Switch to HP to Watts mode to reverse the conversion — pick the HP type and enter a value.
5. Click any row in the reference table to load that device's watt value into the converter.

Use cases

• Convert an electric motor's watt rating to horsepower for equipment specification sheets.
• Compare a European car's PS rating against an American hp figure.
• Verify generator output listed in watts against an HP-rated load.
• Size a motor drive or VFD when the motor nameplate shows only watts.
• Cross-check pump power specs between metric and imperial datasheets.
• Look up where a household appliance or industrial motor falls on a power scale.

Frequently Asked Questions