Convert horsepower to kilojoule/second
Please provide values below to convert horsepower [hp] to kilojoule/second [kJ/s], or Convert kilojoule/second to horsepower.
1 hp = 0.7457 kJ/s. To convert horsepower to kilojoule/second, multiply the value by 0.7457; to go the other way, divide by it (1 kJ/s = 1.34102185866 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 = 0.7457 kJ/s
- 1 kJ/s = 1.34102185866 hp
- 10 hp = 7.457 kJ/s
- 100 hp = 74.57 kJ/s
How to Convert Horsepower to Kilojoule/second
1 hp = 0.7457 kJ/s
Example: convert 15 hp to kJ/s:
15 hp = 15 × 0.7457 kJ/s = 11.1855 kJ/s
Horsepower to Kilojoule/second Conversion Table
| horsepower | kilojoule/second |
|---|---|
| 1 hp | 0.7457 kJ/s |
| 2 hp | 1.4914 kJ/s |
| 3 hp | 2.2371 kJ/s |
| 5 hp | 3.7285 kJ/s |
| 10 hp | 7.457 kJ/s |
| 20 hp | 14.914 kJ/s |
| 50 hp | 37.285 kJ/s |
| 100 hp | 74.57 kJ/s |
| 500 hp | 372.85 kJ/s |
| 1000 hp | 745.7 kJ/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.
Kilojoule/second
A kilojoule per second (kJ/s) is a unit of power equivalent to one kilojoule of energy transferred or converted per second.
History/Origin
The kilojoule per second is derived from the SI units of energy (joule) and time (second), and has been used in scientific and engineering contexts to measure power, especially in fields like physics and energy studies.
Current Use
It is used to quantify power in various applications, including electrical power, mechanical power, and energy transfer rates, particularly where kilojoules and seconds are the relevant units.
Frequently Asked Questions
What is 1 horsepower in kilojoule/second?
1 horsepower (hp) = 0.7457 kilojoule/second (kJ/s).
How do you convert horsepower to kilojoule/second?
Multiply the horsepower value by 0.7457. For example, 25 hp × 0.7457 = 18.6425 kJ/s.
What is 10 horsepower in kilojoule/second?
10 hp = 7.457 kJ/s.
Which unit is larger, the horsepower or the kilojoule/second?
The kilojoule/second is the larger unit: 1 hp equals only 0.7457 kJ/s.