Horsepower is a unit of power that originated in the 18th century, coined by engineer James Watt to compare the output of steam engines with the power of draft horses. A fascinating aspect is the value assigned to this measurement: 1 British horsepower equals approximately 745.7 watts. To put this into perspective, this means that just one horsepower can light up more than ten 60-watt light bulbs!

Interestingly, the unit became widely adopted not for its precision but as a marketing tool. Since people were familiar with the strength of horses in everyday tasks, comparing engine power to horses made industrial power even more relatable and understandable during the Industrial Revolution. Today, horsepower continues to be an essential metric in the automotive and engine industries worldwide, despite its equine origins.

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A gigawatt (GW) is a unit of power equal to one billion watts. To put it into perspective, a single gigawatt can power approximately 750,000 homes simultaneously in developed countries. This immense power is often used to measure the capacity of power plants, with modern nuclear reactors typically generating between 1 to 1.3 gigawatts each. The term gained mainstream attention in pop culture when Doc Brown, in the movie “Back to the Future,” famously exclaimed the need for 1.21 “gigawatts” to power his time machine. Although mistakenly pronounced, it sparked curiosity about the sheer scale of energy required for large-scale projects and futuristic concepts. Today, understanding gigawatts is crucial as we transition to more sustainable energy sources and technologies.

Horsepower (British)

Gigawatts

0 hp

0 GW

10 hp

0.000007457 GW

20 hp

0.000014914 GW

30 hp

0.000022371 GW

40 hp

0.000029828 GW

50 hp

0.000037285 GW

60 hp

0.000044742 GW

70 hp

0.000052199 GW

80 hp

0.000059656 GW

90 hp

0.000067113 GW

100 hp

0.00007457 GW

110 hp

0.000082027 GW

120 hp

0.000089484 GW

130 hp

0.000096941 GW

140 hp

0.000104398 GW

150 hp

0.000111855 GW

160 hp

0.000119312 GW

170 hp

0.000126769 GW

180 hp

0.000134226 GW

190 hp

0.000141683 GW

200 hp

0.00014914 GW

210 hp

0.000156597 GW

220 hp

0.000164054 GW

230 hp

0.000171511 GW

240 hp

0.000178968 GW

250 hp

0.000186425 GW

260 hp

0.000193882 GW

270 hp

0.000201339 GW

280 hp

0.000208796 GW

290 hp

0.000216253 GW

300 hp

0.00022371 GW

310 hp

0.000231167 GW

320 hp

0.000238624 GW

330 hp

0.000246081 GW

340 hp

0.000253538 GW

350 hp

0.000260995 GW

360 hp

0.000268452 GW

370 hp

0.000275909 GW

380 hp

0.000283366 GW

390 hp

0.000290823 GW

400 hp

0.00029828 GW

410 hp

0.000305737 GW

420 hp

0.000313194 GW

430 hp

0.000320651 GW

440 hp

0.000328108 GW

450 hp

0.000335565 GW

460 hp

0.000343022 GW

470 hp

0.000350479 GW

480 hp

0.000357936 GW

490 hp

0.000365393 GW

500 hp

0.00037285 GW

510 hp

0.000380307 GW

520 hp

0.000387764 GW

530 hp

0.000395221 GW

540 hp

0.000402678 GW

550 hp

0.000410135 GW

560 hp

0.000417592 GW

570 hp

0.000425049 GW

580 hp

0.000432506 GW

590 hp

0.000439963 GW

600 hp

0.00044742 GW

610 hp

0.000454877 GW

620 hp

0.000462334 GW

630 hp

0.000469791 GW

640 hp

0.000477248 GW

650 hp

0.000484705 GW

660 hp

0.000492162 GW

670 hp

0.000499619 GW

680 hp

0.000507076 GW

690 hp

0.000514533 GW

700 hp

0.00052199 GW

710 hp

0.000529447 GW

720 hp

0.000536904 GW

730 hp

0.000544361 GW

740 hp

0.000551818 GW

750 hp

0.000559275 GW

760 hp

0.000566732 GW

770 hp

0.000574189 GW

780 hp

0.000581646 GW

790 hp

0.000589103 GW

800 hp

0.00059656 GW

810 hp

0.000604017 GW

820 hp

0.000611474 GW

830 hp

0.000618931 GW

840 hp

0.000626388 GW

850 hp

0.000633845 GW

860 hp

0.000641302 GW

870 hp

0.000648759 GW

880 hp

0.000656216 GW

890 hp

0.000663673 GW

900 hp

0.00067113 GW

910 hp

0.000678587 GW

920 hp

0.000686044 GW

930 hp

0.000693501 GW

940 hp

0.000700958 GW

950 hp

0.000708415 GW

960 hp

0.000715872 GW

970 hp

0.000723329 GW

980 hp

0.000730786 GW

990 hp

0.000738243 GW

1000 hp

0.0007457 GW

Conversion

Horsepower (British) to Watts

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Horsepower (British) to Milliwatts

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Horsepower (British) to Kilowatts

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Horsepower (British) to Megawatts

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Horsepower (British) to Horsepower (metric)

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Horsepower (British) to British thermal units per second

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Horsepower (British) to Foot-pounds per second

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Horsepower (British) to Gigawatts Conversion

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> Horsepower (British) to Gigawatts Conversion Table

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