Horsepower to Watt Conversion
Convert between Horsepower and Watt quickly and accurately.
How to Convert Horsepower to Watt
Conversion Formula
Example
Convert 15 hp to W:
Unit Information
Learn about the power units you're converting between
Horsepower
hp
Definition
The horsepower (hp) is a unit of power equal to approximately 746 watts, representing the power output of a horse. It is commonly used in automotive engineering, mechanical engineering, and industrial applications for measuring the power output of engines, motors, and mechanical systems.
History/Origin
The horsepower was originally defined by James Watt in the 18th century to compare the power output of steam engines to that of horses. It became a standard unit for measuring mechanical power and is still widely used in automotive and industrial applications.
Current Use
Widely used in automotive engineering, mechanical engineering, and industrial applications for measuring the power output of engines, motors, and mechanical systems. Essential for engine specifications and mechanical power ratings.
Multiplier
745.7
Offset
0
Watt
W
Definition
The watt (W) is the SI derived unit of power, representing the rate of energy transfer or conversion. It is defined as one joule per second and is the standard unit for measuring electrical power, mechanical power, and thermal power in scientific and engineering applications.
History/Origin
The watt was named after James Watt, the Scottish engineer who improved the steam engine. It was adopted as the SI unit of power in 1960, replacing the horsepower as the standard unit for power measurements in the International System of Units.
Current Use
Widely used in electrical engineering, mechanical engineering, and physics for measuring power consumption, generation, and transfer. Essential for calculating energy efficiency, electrical load, and power ratings of devices and systems.
Multiplier
1
Offset
0
Horsepower to Watt Conversion Table
| Horsepower [hp] | Watt [W] |
|---|---|
| 1 hp | 745.699872 W |
| 10 hp | 7456.998716 W |
| 25 hp | 18642.49679 W |
| 50 hp | 37284.993579 W |
| 100 hp | 74569.987158 W |
| 0 hp | 0E+0 W |
| -10 hp | -7456.998716 W |
| -40 hp | -29827.994863 W |
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