Convert horsepower to attojoule/second
Please provide values below to convert horsepower [hp] to attojoule/second [aJ/s], or Convert attojoule/second to horsepower.
1 hp = 7.4570e+20 aJ/s. To convert horsepower to attojoule/second, multiply the value by 7.4570e+20; to go the other way, divide by it (1 aJ/s = 1.3410e-21 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 = 7.4570e+20 aJ/s
- 1 aJ/s = 1.3410e-21 hp
- 10 hp = 7.4570e+21 aJ/s
- 100 hp = 7.4570e+22 aJ/s
How to Convert Horsepower to Attojoule/second
1 hp = 7.457e+20 aJ/s
Example: convert 15 hp to aJ/s:
15 hp = 15 × 7.457e+20 aJ/s = 1.11855e+22 aJ/s
Horsepower to Attojoule/second Conversion Table
| horsepower | attojoule/second |
|---|---|
| 1 hp | 7.4570e+20 aJ/s |
| 2 hp | 1.4914e+21 aJ/s |
| 3 hp | 2.2371e+21 aJ/s |
| 5 hp | 3.7285e+21 aJ/s |
| 10 hp | 7.4570e+21 aJ/s |
| 20 hp | 1.4914e+22 aJ/s |
| 50 hp | 3.7285e+22 aJ/s |
| 100 hp | 7.4570e+22 aJ/s |
| 500 hp | 3.7285e+23 aJ/s |
| 1000 hp | 7.4570e+23 aJ/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.
Attojoule/second
An attojoule per second (aJ/s) is a unit of power representing the rate of energy transfer or conversion of one attojoule (10^-18 joules) per second.
History/Origin
The attojoule is a relatively recent SI prefix introduced to measure extremely small quantities of energy, and its use in power units like aJ/s has emerged with advancements in nanotechnology and quantum physics, though it remains a specialized unit with limited historical usage.
Current Use
The aJ/s is used in scientific research involving extremely low power measurements, such as in quantum physics, nanotechnology, and energy transfer studies at the atomic or molecular scale.
Frequently Asked Questions
What is 1 horsepower in attojoule/second?
1 horsepower (hp) = 7.4570e+20 attojoule/second (aJ/s).
How do you convert horsepower to attojoule/second?
Multiply the horsepower value by 7.4570e+20. For example, 25 hp × 7.4570e+20 = 1.8642e+22 aJ/s.
What is 10 horsepower in attojoule/second?
10 hp = 7.4570e+21 aJ/s.
Which unit is larger, the horsepower or the attojoule/second?
The horsepower is the larger unit: 1 hp = 7.4570e+20 aJ/s.