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Power Converter

Instantly convert between watts, horsepower, BTU/h, and more

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About Power Converter

The Power Converter is an online calculation tool that converts between 10 types of power and work rate units, using the watt (W) as the base unit from the International System of Units (SI). It accurately converts your input value to all supported units without requiring software installation.

Ideal for electrical engineering (kW to HP conversion), automotive engine output comparison (PS vs kW), HVAC capacity calculations (BTU/h), and physics energy conversion studies. Perform power unit conversions quickly and accurately for any practical or academic purpose.

Features real-time conversion, simultaneous display of all units, one-click copy functionality, and automatic memory of your last-used unit for efficient workflows.

How to use Power Converter

  1. Enter the value you want to convert in the input field (e.g., 100, 1.5, etc.)
  2. Select the source unit from the dropdown menu (watts, horsepower, BTU/h, etc.)
  3. Conversion results for all supported units are instantly displayed in a table
  4. Click the 📋 button on each row to copy that result, or use the top 📋 button to copy all results
  5. Click the ↔ button to swap to the next unit for continuous conversions

Benefits of Power Converter

  • Supports 10 power unit types: W, kW, MW, mW, HP, PS, cal/s, kcal/h, BTU/h, and ft·lbf/s
  • Real-time conversion results for all units displayed instantly as you type
  • One-click copy functionality for individual results or all conversions at once
  • Automatically remembers your last-used unit for faster repeated conversions
  • Runs entirely in the browser with no installation required

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