Convert Power Easily

Convert between Watts (W), Kilowatts (kW), Horsepower (hp), Megawatts (MW) and BTU/hr instantly.

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Power Converter – Watts, Kilowatts, Horsepower & More
Use our free Power Conversion Calculator to instantly convert between watts (W), kilowatts (kW), megawatts (MW), milliwatts (mW), horsepower (hp) and other power units. Whether you’re working on electrical appliances, industrial equipment, or scientific calculations, this tool provides fast and accurate power conversions.

Power is the rate at which energy is used or transferred. It’s often measured in watts (W), but many fields use different units such as horsepower, kilowatts, or megawatts. For example:

  • 1 Kilowatt (kW) = 1000 Watts (W)
  • 1 Megawatt (MW) = 1,000,000 Watts (W)
  • 1 Horsepower (hp) ≈ 746 Watts

Instead of manually memorizing formulas, our power converter gives you precise results instantly.

Our online power calculator is quick and easy to use:

  • Step 1: Enter the power value you want to convert.
  • Step 2: Select the unit you want to convert from (e.g., watts, kilowatts, horsepower).
  • Step 3: Choose the unit you want to convert to.
  • Step 4: Click “Convert” to see the accurate result instantly.

Perfect for electrical devices, energy usage, engineering, or travel adapters.

Here are the most widely used power measurement units:

  • Watt (W): Standard SI unit of power.
  • Kilowatt (kW): Common for household appliances and electricity bills.
  • Megawatt (MW): Used for large-scale power plants and industries.
  • Milliwatt (mW): Used for small electronic devices like lasers and headphones.
  • Horsepower (hp): Commonly used in vehicles and engines.

Quick conversions:

  • 1 kW = 1000 W
  • 1 MW = 1,000,000 W
  • 1 hp ≈ 746 W

Power conversion is essential in various cases, including:

  • Home appliances – checking power consumption in watts and kilowatts.
  • Travel – converting voltage and power ratings when using international adapters.
  • Engineering & science – accurate conversions for calculations and experiments.
  • Industrial use – scaling power measurements for large equipment.
  • Automotive – comparing horsepower and kilowatt ratings in engines.

With instant results, our tool saves time and avoids manual errors.

  • Converts between watts, kilowatts, megawatts, milliwatts and horsepower.
  • Accurate and instant results for all power units.
  • Free to use — no signup required.
  • Mobile-friendly and works on any device.
  • Ideal for both casual users and professionals.

Yes. The Power Conversion Calculator is completely secure. It does not collect or store your data — all calculations are performed instantly within your browser.