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Power Converter — Watts, Horsepower & kW

Convert watts, horsepower and BTUs per hour

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Features

  • 10 units
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This tool runs on your device — your files and inputs never go anywhere.

How to Use Power Converter

Convert watts, horsepower and BTUs per hour No signup, and nothing gets uploaded for most use.

  1. 1

    Enter your numbers in the input fields.

  2. 2

    Choose the calculation options or frequency.

  3. 3

    The result updates instantly as you type.

  4. 4

    Review the breakdown, chart, or schedule, and copy the answer.

Why you might like it

  • Nothing to upload — the work happens on your device.
  • Free with no signup, no watermarks, and no daily limits.
  • Works in any modern browser on any device — nothing to install.
  • Usually done in a few seconds, so it doesn't get in your way.
Try Power

Frequently Asked Questions

How many units of power can this converter handle?▾

This power converter supports 10 units including W, mW, kW, MW, GW.

How do I convert W to mW?▾

Enter the amount in the value field, pick W as the source unit and mW as the target unit. The result updates instantly as you type.

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