Joule to Horsepower hour Conversion
Convert between Joule and Horsepower hour quickly and accurately.
How to Convert Joule to Horsepower hour
Conversion Formula
Example
Convert 15 J to hp⋅h:
Unit Information
Learn about the energy units you're converting between
Joule
J
Definition
The joule (symbol: J) is the SI base unit of energy, work, and heat. It is defined as the work done when a force of one newton moves an object one meter in the direction of the force. One joule equals one newton-meter or one watt-second.
History/Origin
The joule was named after James Prescott Joule (1818-1889), an English physicist who established the mechanical equivalent of heat. It was officially adopted as the SI unit of energy in 1948, replacing the calorie in scientific contexts.
Current Use
Joules are used universally in physics, engineering, and chemistry for measuring energy, work, and heat. Applications include electrical energy calculations, mechanical work, thermal energy, and energy efficiency measurements in all scientific and industrial fields.
Multiplier
1
Offset
0
Horsepower hour
hp⋅h
Definition
A horsepower-hour (symbol: hp⋅h) is a unit of energy equal to the amount of work done by a one-horsepower engine running for one hour. It equals approximately 2.68 million joules and is used for measuring large amounts of mechanical energy.
History/Origin
The horsepower-hour was developed in the 19th century alongside the horsepower unit for measuring the energy output of steam engines and later internal combustion engines. It became important in industrial and automotive applications.
Current Use
Horsepower-hours are used in automotive industry for measuring engine energy output, in industrial applications for machinery energy consumption, in agricultural equipment for work calculations, and in mechanical engineering for energy planning.
Multiplier
2684519.537
Offset
0
Joule to Horsepower hour Conversion Table
| Joule [J] | Horsepower hour [hp⋅h] |
|---|---|
| 1 J | 4E-7 hp⋅h |
| 10 J | 0.000004 hp⋅h |
| 25 J | 0.000009 hp⋅h |
| 50 J | 0.000019 hp⋅h |
| 100 J | 0.000037 hp⋅h |
| 0 J | 0E+0 hp⋅h |
| -10 J | -0.000004 hp⋅h |
| -40 J | -0.000015 hp⋅h |
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