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Power Converter

Watt to Horsepower (mechanical) Converter

Convert Watt (W) to Horsepower (mechanical) (hp) instantly with our interactive tool, benchmark tables, and detailed unit information.

1 W = 0.0013 hp
Editable
W
Input
Auto-Calculated
hp
Result
Power conversion — instant results

Convert Watt to Horsepower (mechanical)

1 W = 0.0013 hp
Watt (W) Horsepower (mechanical) (hp)
1 W 0.001341 hp
5 W 0.006705 hp
10 W 0.01341 hp
25 W 0.033526 hp
50 W 0.067051 hp
100 W 0.134102 hp
500 W 0.670511 hp
1,000 W 1.341022 hp

Convert Horsepower (mechanical) to Watt

1 hp = 745.7000 W
Horsepower (mechanical) (hp) Watt (W)
1 hp 745.7 W
5 hp 3,728.5 W
10 hp 7,457 W
25 hp 18,642.5 W
50 hp 37,285 W
100 hp 74,570 W
500 hp 372,850 W
1,000 hp 745,700 W

About Watt and Horsepower (mechanical)

Detailed information about both units of measurement.

METRIC UNIT

Watt

W
Definition
The SI unit of power, equal to 1 joule per second. The rate of energy transfer.
SI / Standard Information
SI-derived unit (W). Named after James Watt. 1 W = 1 J/s. The fundamental unit for measuring electrical and mechanical power.
Approximate Comparison
A watt is about the power needed to lift a small apple off the ground in one second.
Practical Applications
  • Light bulb and appliance power ratings
  • Audio speaker output power
  • Computer and electronics power consumption
  • Solar panel power output
Real-World Examples
  • An LED light bulb uses 8-12 W
  • A laptop charger delivers about 60-100 W
  • A microwave oven uses about 1,000-1,500 W
IMPERIAL UNIT

Horsepower (mechanical)

hp
Definition
An imperial unit of power equal to 550 foot-pounds per second. Used for engine output in the US and UK.
SI / Standard Information
Defined as 745.7 W exactly. Originally defined by James Watt to compare steam engine output to draft horses.
Approximate Comparison
One horsepower is roughly the sustained power output of a draft horse or about 10-12 humans.
Practical Applications
  • US and UK vehicle engine power ratings
  • Lawn mower and small engine specs
  • Industrial motor power in the US
  • Marine engine specifications
Real-World Examples
  • A typical family car has 150-250 hp
  • A lawn mower engine is about 5-15 hp
  • A Formula 1 car produces about 1,000 hp

About Converting Watt to Horsepower (mechanical)

Our Watt to Horsepower (mechanical) converter provides instant, accurate conversion between these two essential power units. Whether you are working in engineering, construction, education, or everyday power measurement, this tool delivers precise results with zero friction.

The Watt (W) is a metric unit of power. The SI unit of power, equal to 1 joule per second. The rate of energy transfer. A watt is about the power needed to lift a small apple off the ground in one second.

The Horsepower (mechanical) (hp) is a imperial unit of power. An imperial unit of power equal to 550 foot-pounds per second. Used for engine output in the US and UK. One horsepower is roughly the sustained power output of a draft horse or about 10-12 humans.

Conversion Formula & Worked Examples

The conversion between W and hp uses the following mathematical relationship:

Horsepower (mechanical) = Watt × 0.001341

Watt = Horsepower (mechanical) × 745.700000

Whether you need to convert for light bulb and appliance power ratings or us and uk vehicle engine power ratings, our interactive converter provides instant, accurate results.

Example

1 W

=

0.0013 hp

Example

5 W

=

0.0067 hp

Example

10 W

=

0.0134 hp

Reverse Direction

Need to convert Horsepower (mechanical) back into Watt?

Switch conversion direction to view Horsepower (mechanical) → Watt tables, benchmarks, and detailed info.

Open Horsepower (mechanical) → Watt

Practical Use Cases & Applications

W Watt

  • Light bulb and appliance power ratings
  • Audio speaker output power
  • Computer and electronics power consumption
  • Solar panel power output

hp Horsepower (mechanical)

  • US and UK vehicle engine power ratings
  • Lawn mower and small engine specs
  • Industrial motor power in the US
  • Marine engine specifications

Frequently Asked Questions

Common questions about this conversion and related measurement topics.

How do I convert Watt to Horsepower (mechanical)?
To convert Watt (W) to Horsepower (mechanical) (hp), multiply the watt value by the conversion factor. Our converter below handles this instantly — just enter the value in W and the hp result appears in real time.
How many Horsepower are in one watt?
One watt (W) equals approximately 0.001341 horsepower (mechanical) (hp). This conversion factor is constant and can be used for any watt value.
What is the formula to convert W to hp?
The conversion formula is: <strong>Horsepower (mechanical) = Watt × 0.001341</strong>. For example, 5 W × 0.0013 = 0.0067 hp, and 10 W × 0.0013 = 0.0134 hp.
Can I convert Horsepower (mechanical) back to Watt?
Yes! Use the reverse direction on our converter, or visit our dedicated <a href="/power/horsepower-to-watts/" class="text-accent-teal underline">Horsepower (mechanical) to Watt converter</a>. The reverse conversion factor is approximately 1 hp = 745.700000 W.
Where is Watt commonly used?
Light bulb and appliance power ratings, Audio speaker output power, Computer and electronics power consumption. The SI unit of power, equal to 1 joule per second. The rate of energy transfer.
What is the difference between Watt and Horsepower (mechanical)?
Watt (W) and Horsepower (mechanical) (hp) are both units of power. Watt belongs to the metric system, while Horsepower (mechanical) belongs to the imperial system. Understanding the conversion between them is essential for international work in power measurement.
What are some real-world examples of watts and horsepower?
Watt: An LED light bulb uses 8-12 W; A laptop charger delivers about 60-100 W Horsepower (mechanical): A typical family car has 150-250 hp; A lawn mower engine is about 5-15 hp

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About This Conversion ℹ

This Watt to Horsepower (mechanical) converter provides accurate, real-time conversions between these two power units.

Both units are among the most commonly used power measurements — rated 9/10 and 9/10 in popularity.

Bookmark this page for quick access to the Watt → Horsepower (mechanical) converter whenever you need precise unit conversion.

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