Online Power Units Converter
How to Convert from Watt [W] to Horsepower (electric)?
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How to Convert from Watt [W] to Horsepower (electric)?

Learn how to convert power measurements from watts (W) to electric horsepower (hp), a unit commonly used to rate electric motors and drives. Understand the conversion process, applications, and practical examples.

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Watt [W] to Horsepower (electric) Conversion Table

Watt [W] Horsepower (electric)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
Watt [W] to Horsepower (electric) Conversion Table
Watt [W] Horsepower (electric)

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  131. How to convert from millijoule/second [mJ/s] to watt [W]?
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  133. How to convert from microjoule/second [µJ/s] to watt [W]?
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  135. How to convert from nanojoule/second [nJ/s] to watt [W]?
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What Is This Tool?

This converter transforms power values from watts, the SI unit measuring energy transfer per second, into electric horsepower, a unit used primarily to rate electric motor power. It helps compare power ratings across different measurement systems commonly employed in electrical engineering and industrial applications.

How to Use This Tool?

  • Enter the power value in watts into the input field.
  • Select watt [W] as the input unit and horsepower (electric) as the output unit.
  • Use the conversion button to obtain the equivalent power in electric horsepower.
  • Review the results to compare or specify motor power ratings effectively.

Key Features

  • Converts power from watt (W) to electric horsepower accurately based on the fixed conversion rate.
  • Supports comparisons of electric motor outputs with different unit systems.
  • Ideal for use in electrical engineering, motor manufacturing, and industrial equipment specification.
  • Includes common examples to illustrate practical conversion results.
  • Browser-based and user-friendly interface for quick power unit transformation.

Examples

  • Convert 100 watts: 100 × 0.0013404826 = 0.13404826 electric horsepower.
  • Convert 746 watts: 746 × 0.0013404826 = 1 electric horsepower.

Common Use Cases

  • Comparing power ratings of electrical devices and motors measured in watts and electric horsepower.
  • Checking motor nameplates and specifications like pumps, compressors, and fans.
  • Sizing motor controllers and electrical supply capacities for industrial equipment.
  • Preparing equipment specifications and invoices involving power conversions.

Tips & Best Practices

  • Always double-check unit selections before conversion to ensure accuracy.
  • Use this tool when working with electric motor power ratings to communicate specifications clearly.
  • Consider the context of use since electric horsepower differs from mechanical horsepower values.
  • Review examples to understand how conversion applies to typical power values.

Limitations

  • Electric horsepower is fixed at 746 watts and only applies to electric motors, not mechanical horsepower.
  • Rounding during conversion may limit precision for highly exact applications.
  • Not suitable for contexts requiring mechanical horsepower comparisons outside electric motor power ratings.

Frequently Asked Questions

What does one watt represent?
One watt equals one joule of energy transferred or converted per second, measuring power or the rate at which work is performed.

How is electric horsepower defined?
Electric horsepower is defined as exactly 746 watts and is used to rate the power output of electric motors.

Why convert from watts to electric horsepower?
Converting watts to electric horsepower helps compare power ratings and properly specify electric motors and related industrial equipment.

Key Terminology

Watt (W)
The SI derived unit of power, defined as one joule per second, used to quantify the rate of energy transfer or work done.
Electric Horsepower
A power unit defined as 746 watts, commonly used in U.S. engineering to rate the output of electric motors.

Quick Knowledge Check

What is the exact watt equivalent of one electric horsepower?
Which unit measures power as one joule per second?
When converting watts to electric horsepower, which application is typical?

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