Convert horsepower to joule/second
Please provide values below to convert horsepower [hp] to joule/second [J/s], or Convert joule/second to horsepower.
1 hp = 745.7 J/s. To convert horsepower to joule/second, multiply the value by 745.7; to go the other way, divide by it (1 J/s = 0.00134102185866 hp). Both units measure power and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 hp = 745.7 J/s
- 1 J/s = 0.00134102185866 hp
- 10 hp = 7457 J/s
- 100 hp = 74570 J/s
How to Convert Horsepower to Joule/second
1 hp = 745.7 J/s
Example: convert 15 hp to J/s:
15 hp = 15 × 745.7 J/s = 11185.5 J/s
Horsepower to Joule/second Conversion Table
| horsepower | joule/second |
|---|---|
| 1 hp | 745.7 J/s |
| 2 hp | 1491.4 J/s |
| 3 hp | 2237.1 J/s |
| 5 hp | 3728.5 J/s |
| 10 hp | 7457 J/s |
| 20 hp | 14914 J/s |
| 50 hp | 37285 J/s |
| 100 hp | 74570 J/s |
| 500 hp | 372850 J/s |
| 1000 hp | 745700 J/s |
Horsepower
Horsepower (hp) is a unit of power measurement originally developed to compare the power of engines and motors, representing the rate at which work is done or energy is transferred.
History/Origin
The term was introduced in the late 18th century by James Watt to compare the power of steam engines to draft horses. It became a standard unit in engineering and automotive industries, with its definition evolving over time from mechanical to metric standards.
Current Use
Horsepower is widely used today to rate the power output of engines, motors, and other machinery, especially in automotive, aerospace, and industrial applications. It remains a common unit for expressing engine power in many countries.
Joule/second
The joule per second (J/s) is a unit of power representing the rate at which energy is transferred or converted, equivalent to one watt.
History/Origin
The joule per second has been used as a measure of power since the adoption of the SI system, where the watt (W) became the standard unit of power, with 1 J/s = 1 W.
Current Use
J/s is primarily used in scientific and engineering contexts to quantify power, especially in physics and electrical engineering, often interchangeably with watts.
Frequently Asked Questions
What is 1 horsepower in joule/second?
1 horsepower (hp) = 745.7 joule/second (J/s).
How do you convert horsepower to joule/second?
Multiply the horsepower value by 745.7. For example, 25 hp × 745.7 = 18642.5 J/s.
What is 10 horsepower in joule/second?
10 hp = 7457 J/s.
Which unit is larger, the horsepower or the joule/second?
The horsepower is the larger unit: 1 hp = 745.7 J/s.