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Power Converter

Horsepower (mechanical) to Watt Converter

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

1 hp = 745.7000 W
Editable
hp
Input
Auto-Calculated
W
Result
Power conversion — instant results

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

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

About Horsepower (mechanical) and Watt

Detailed information about both units of measurement.

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
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

About Converting Horsepower (mechanical) to Watt

Our Horsepower (mechanical) to Watt 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 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.

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.

Conversion Formula & Worked Examples

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

Watt = Horsepower (mechanical) × 745.700000

Horsepower (mechanical) = Watt × 0.001341

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

Example

1 hp

=

745.7 W

Example

5 hp

=

3,728.5 W

Example

10 hp

=

7,457 W

Reverse Direction

Need to convert Watt back into Horsepower (mechanical)?

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

Open Watt → Horsepower (mechanical)

Practical Use Cases & Applications

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

W Watt

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

Frequently Asked Questions

Common questions about this conversion and related measurement topics.

How do I convert Horsepower (mechanical) to Watt?
To convert Horsepower (mechanical) (hp) to Watt (W), multiply the horsepower (mechanical) value by the conversion factor. Our converter below handles this instantly — just enter the value in hp and the W result appears in real time.
How many Watts are in one horsepower (mechanical)?
One horsepower (mechanical) (hp) equals approximately 745.700000 watt (W). This conversion factor is constant and can be used for any horsepower (mechanical) value.
What is the formula to convert hp to W?
The conversion formula is: <strong>Watt = Horsepower (mechanical) × 745.700000</strong>. For example, 5 hp × 745.7000 = 3728.5000 W, and 10 hp × 745.7000 = 7457.0000 W.
Can I convert Watt back to Horsepower (mechanical)?
Yes! Use the reverse direction on our converter, or visit our dedicated <a href="/power/watts-to-horsepower/" class="text-accent-teal underline">Watt to Horsepower (mechanical) converter</a>. The reverse conversion factor is approximately 1 W = 0.001341 hp.
Where is Horsepower (mechanical) commonly used?
US and UK vehicle engine power ratings, Lawn mower and small engine specs, Industrial motor power in the US. An imperial unit of power equal to 550 foot-pounds per second. Used for engine output in the US and UK.
What is the difference between Horsepower (mechanical) and Watt?
Horsepower (mechanical) (hp) and Watt (W) are both units of power. Horsepower (mechanical) belongs to the imperial system, while Watt belongs to the metric system. Understanding the conversion between them is essential for international work in power measurement.
What are some real-world examples of horsepower and watts?
Horsepower (mechanical): A typical family car has 150-250 hp; A lawn mower engine is about 5-15 hp Watt: An LED light bulb uses 8-12 W; A laptop charger delivers about 60-100 W

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About This Conversion ℹ

This Horsepower (mechanical) to Watt 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 Horsepower (mechanical) → Watt converter whenever you need precise unit conversion.

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