Horsepower to Joules (hp → J)
Formula
1 hp = 745.7 JConversion Table
| hp | J |
|---|---|
| 0 | 0 |
| 1.0000 | 745.70 |
| 2.0000 | 1,491.4 |
| 3.0000 | 2,237.1 |
| 4.0000 | 2,982.8 |
| 5.0000 | 3,728.5 |
| 6.0000 | 4,474.2 |
| 7.0000 | 5,219.9 |
| 8.0000 | 5,965.6 |
| 9.0000 | 6,711.3 |
| 10.000 | 7,457.0 |
| 11.000 | 8,202.7 |
| 12.000 | 8,948.4 |
| 13.000 | 9,694.1 |
| 14.000 | 10,440 |
| 15.000 | 11,186 |
| 16.000 | 11,931 |
| 17.000 | 12,677 |
| 18.000 | 13,423 |
| 19.000 | 14,168 |
| hp | J |
|---|---|
| 20.000 | 14,914 |
| 21.000 | 15,660 |
| 22.000 | 16,405 |
| 23.000 | 17,151 |
| 24.000 | 17,897 |
| 25.000 | 18,643 |
| 26.000 | 19,388 |
| 27.000 | 20,134 |
| 28.000 | 20,880 |
| 29.000 | 21,625 |
| 30.000 | 22,371 |
| 31.000 | 23,117 |
| 32.000 | 23,862 |
| 33.000 | 24,608 |
| 34.000 | 25,354 |
| 35.000 | 26,100 |
| 36.000 | 26,845 |
| 37.000 | 27,591 |
| 38.000 | 28,337 |
| 39.000 | 29,082 |
| hp | J |
|---|---|
| 40.000 | 29,828 |
| 41.000 | 30,574 |
| 42.000 | 31,319 |
| 43.000 | 32,065 |
| 44.000 | 32,811 |
| 45.000 | 33,557 |
| 46.000 | 34,302 |
| 47.000 | 35,048 |
| 48.000 | 35,794 |
| 49.000 | 36,539 |
| 50.000 | 37,285 |
| 51.000 | 38,031 |
| 52.000 | 38,776 |
| 53.000 | 39,522 |
| 54.000 | 40,268 |
| 55.000 | 41,014 |
| 56.000 | 41,759 |
| 57.000 | 42,505 |
| 58.000 | 43,251 |
| 59.000 | 43,996 |
| hp | J |
|---|---|
| 60.000 | 44,742 |
| 61.000 | 45,488 |
| 62.000 | 46,233 |
| 63.000 | 46,979 |
| 64.000 | 47,725 |
| 65.000 | 48,471 |
| 66.000 | 49,216 |
| 67.000 | 49,962 |
| 68.000 | 50,708 |
| 69.000 | 51,453 |
| 70.000 | 52,199 |
| 71.000 | 52,945 |
| 72.000 | 53,690 |
| 73.000 | 54,436 |
| 74.000 | 55,182 |
| 75.000 | 55,928 |
| 76.000 | 56,673 |
| 77.000 | 57,419 |
| 78.000 | 58,165 |
| 79.000 | 58,910 |
Horsepower to Joules Conversion
Converting Horsepower (hp) to Joules (J) is a common energy and power conversion. 1 hp equals 745.7 J. For example, 100 hp is equal to 74,570 J.
Quick Mental Math: Horsepower to Joules
For energy conversions, identify the unit scale difference in the prefix or definition.
Why is converting Horsepower to Joules tricky?
Energy unit conversions involve non-linear factors across different measurement systems.
Quick Reference Values
1 hp = 745.7 J. 5 hp = 3,728.5 J. 10 hp = 7,457 J. 25 hp = 18,642.5 J. 50 hp = 37,285 J. 100 hp = 74,570 J.
What is Horsepower?
Horsepower (hp) is a unit of energy and power. Horsepower is a unit of power originally defined to compare the output of steam engines with draft horses. The mechanical horsepower equals exactly 745.7 watts, as standardized by the SAE and ISO. It measures the rate of work or energy transfer in engines and motors [nist-cuu]. James Watt introduced the horsepower unit in the late 18th century to market his improved steam engines by equating their power to that of horses. This practical definition facilitated industrial adoption and standardization of power output metrics [nist-cuu]. Horsepower remains common in automotive, marine, and industrial machinery industries, especially in the US and Europe. Although the watt is the SI unit for power, horsepower is often used in marketing and technical specifications [nist-cuu].
What is Joules?
Joules (J) is a unit of energy and power. The joule is the SI unit of energy defined as the work done when a force of one newton moves an object one meter in the direction of the force. It equals one kilogram meter squared per second squared (kg·m²/s²). This definition aligns with the International System of Units as standardized by the BIPM [bipm-si-brochure]. The joule is named after James Prescott Joule, a 19th-century physicist who studied energy conservation. It was officially adopted as a unit of energy by the CGPM in 1948 to unify energy measurement standards internationally [cgpm-resolutions]. Joules are used worldwide in physics, engineering, and electrical industries to quantify energy, work, and heat. Countries using the SI system, including those in Europe, Asia, and the Americas, rely on joules for scientific and industrial applications [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: horse power, horsepower, hp, horsepwer, horspower, joule, joul, jouls, juls. All of these refer to the Horsepower to Joules conversion.