Horsepower hour to Kilojoule Conversion
Convert between Horsepower hour and Kilojoule quickly and accurately.
How to Convert Horsepower hour to Kilojoule
Conversion Formula
Example
Convert 15 hp⋅h to kJ:
Unit Information
Learn about the energy units you're converting between
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
Kilojoule
kJ
Definition
A kilojoule (symbol: kJ) is a unit of energy equal to 1,000 joules. It is commonly used for measuring larger amounts of energy in food, exercise, and industrial applications. One kilojoule equals approximately 0.239 kilocalories.
History/Origin
The kilojoule was introduced as a practical unit for measuring larger energy quantities in the metric system. It became widely used in the late 20th century for food labeling and energy consumption measurements.
Current Use
Kilojoules are extensively used in nutrition labeling worldwide, exercise physiology for measuring energy expenditure, industrial energy consumption monitoring, and scientific research for measuring moderate energy quantities.
Multiplier
1000
Offset
0
Horsepower hour to Kilojoule Conversion Table
| Horsepower hour [hp⋅h] | Kilojoule [kJ] |
|---|---|
| 1 hp⋅h | 2684.519537 kJ |
| 10 hp⋅h | 26845.195369 kJ |
| 25 hp⋅h | 67112.988422 kJ |
| 50 hp⋅h | 134225.976844 kJ |
| 100 hp⋅h | 268451.953689 kJ |
| 0 hp⋅h | 0E+0 kJ |
| -10 hp⋅h | -26845.195369 kJ |
| -40 hp⋅h | -107380.781475 kJ |
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