Horsepower to Gigajoules (hp → GJ)
Formula
1 hp = 7.457e-7 GJConversion Table
| hp | GJ |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00000074570 |
| 2.0000 | 0.0000014914 |
| 3.0000 | 0.0000022371 |
| 4.0000 | 0.0000029828 |
| 5.0000 | 0.0000037285 |
| 6.0000 | 0.0000044742 |
| 7.0000 | 0.0000052199 |
| 8.0000 | 0.0000059656 |
| 9.0000 | 0.0000067113 |
| 10.000 | 0.0000074570 |
| 11.000 | 0.0000082027 |
| 12.000 | 0.0000089484 |
| 13.000 | 0.0000096941 |
| 14.000 | 0.000010440 |
| 15.000 | 0.000011185 |
| 16.000 | 0.000011931 |
| 17.000 | 0.000012677 |
| 18.000 | 0.000013423 |
| 19.000 | 0.000014168 |
| hp | GJ |
|---|---|
| 20.000 | 0.000014914 |
| 21.000 | 0.000015660 |
| 22.000 | 0.000016405 |
| 23.000 | 0.000017151 |
| 24.000 | 0.000017897 |
| 25.000 | 0.000018642 |
| 26.000 | 0.000019388 |
| 27.000 | 0.000020134 |
| 28.000 | 0.000020880 |
| 29.000 | 0.000021625 |
| 30.000 | 0.000022371 |
| 31.000 | 0.000023117 |
| 32.000 | 0.000023862 |
| 33.000 | 0.000024608 |
| 34.000 | 0.000025354 |
| 35.000 | 0.000026099 |
| 36.000 | 0.000026845 |
| 37.000 | 0.000027591 |
| 38.000 | 0.000028337 |
| 39.000 | 0.000029082 |
| hp | GJ |
|---|---|
| 40.000 | 0.000029828 |
| 41.000 | 0.000030574 |
| 42.000 | 0.000031319 |
| 43.000 | 0.000032065 |
| 44.000 | 0.000032811 |
| 45.000 | 0.000033557 |
| 46.000 | 0.000034302 |
| 47.000 | 0.000035048 |
| 48.000 | 0.000035794 |
| 49.000 | 0.000036539 |
| 50.000 | 0.000037285 |
| 51.000 | 0.000038031 |
| 52.000 | 0.000038776 |
| 53.000 | 0.000039522 |
| 54.000 | 0.000040268 |
| 55.000 | 0.000041014 |
| 56.000 | 0.000041759 |
| 57.000 | 0.000042505 |
| 58.000 | 0.000043251 |
| 59.000 | 0.000043996 |
| hp | GJ |
|---|---|
| 60.000 | 0.000044742 |
| 61.000 | 0.000045488 |
| 62.000 | 0.000046233 |
| 63.000 | 0.000046979 |
| 64.000 | 0.000047725 |
| 65.000 | 0.000048471 |
| 66.000 | 0.000049216 |
| 67.000 | 0.000049962 |
| 68.000 | 0.000050708 |
| 69.000 | 0.000051453 |
| 70.000 | 0.000052199 |
| 71.000 | 0.000052945 |
| 72.000 | 0.000053690 |
| 73.000 | 0.000054436 |
| 74.000 | 0.000055182 |
| 75.000 | 0.000055928 |
| 76.000 | 0.000056673 |
| 77.000 | 0.000057419 |
| 78.000 | 0.000058165 |
| 79.000 | 0.000058910 |
Horsepower to Gigajoules Conversion
Converting Horsepower (hp) to Gigajoules (GJ) is a common energy and power conversion. 1 hp equals 0.000001 GJ. For example, 100 hp is equal to 0.000075 GJ.
Quick Mental Math: Horsepower to Gigajoules
For energy conversions, identify the unit scale difference in the prefix or definition.
Why is converting Horsepower to Gigajoules tricky?
Energy unit conversions involve non-linear factors across different measurement systems.
Quick Reference Values
1 hp = 0.000001 GJ. 5 hp = 0.000004 GJ. 10 hp = 0.000007 GJ. 25 hp = 0.000019 GJ. 50 hp = 0.000037 GJ. 100 hp = 0.000075 GJ.
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 Gigajoules?
Gigajoules (GJ) is a unit of energy and power. The gigajoule is a unit of energy equal to one billion joules (10⁹ J). One joule is the energy transferred when applying one newton of force over one meter, so a gigajoule represents a large energy quantity used in industrial and scientific applications [bipm-si-brochure]. The joule was defined in the 19th century and named after James Prescott Joule. The prefix 'giga-' was adopted internationally as part of SI prefixes in 1960 by the CGPM to denote a factor of 10⁹, formalizing the gigajoule as an SI derived unit [cgpm-resolutions]. Gigajoules are widely used in energy industries such as natural gas and electricity production, especially in Canada and Australia. They appear in energy statistics and engineering calculations per standards from BIPM and NIST [bipm-si-brochure][nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: horse power, horsepower, hp, horsepwer, horspower, giga joules, giga-joules, giga joule, gigajoule. All of these refer to the Horsepower to Gigajoules conversion.