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Convert Horsepower to Watts

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Power Converter

Easily convert between Watts (W), Kilowatts (kW), Megawatts (MW), and Horsepower (hp). Whether you're working with engines, electrical systems, or home appliances, this tool helps you get fast and accurate power conversions.

Why Use It?

  • Ideal for electrical engineering, automotive applications, HVAC, and energy audits.
  • Converts between metric (SI) and imperial power units.
  • Accurate to four decimal places.
  • Perfect for students, engineers, technicians, and energy professionals.

Popular Conversions

Supported Units

  • Watts (W) - SI unit of power; commonly used in electrical devices and energy systems.
  • Kilowatts (kW) - 1,000 watts; used for household appliances, solar panels, and small generators.
  • Megawatts (MW) - 1,000,000 watts; used in power plants and industrial-scale systems.
  • Horsepower (hp) - Used to rate engines and motors; multiple definitions (mechanical, metric, electrical).

Common Uses

  • Comparing car engine power ratings (e.g., hp to kW)
  • Converting solar panel output or generator ratings
  • Evaluating appliance power consumption
  • Calculating HVAC system requirements
  • Analyzing electrical load in commercial and residential systems
  • Interpreting energy production in industrial or utility-scale settings

Frequently Asked Questions

How many watts are in one horsepower?

One mechanical horsepower is approximately 745.7 watts

What's the difference between kW and kWh?

kW (kilowatt) is a measure of power (rate of energy use), while kWh (kilowatt-hour) is a measure of energy consumed over time.

Why do some devices use horsepower instead of watts?

Horsepower is traditionally used for engines and motors because it was historically developed to quantify work done by machines like steam engines and cars, especially in the imperial system.

Can I use kilowatts and horsepower interchangeably?

They measure the same physical quantity (power), but their numerical values differ. 1 kW = 1.341 hp (mechanical), so a conversion is needed.

Horsepower (hp) to Watts (W) Conversion Table
Horsepower (hp)Watts (W)
1745.7
21,491.4
32,237.1
42,982.8
53,728.5
64,474.2
75,219.9
85,965.6
96,711.3
107,457
118,202.7
128,948.4
139,694.1
1410,439.8
1511,185.5
1611,931.2
1712,676.9
1813,422.6
1914,168.3
2014,914
2115,659.7
2216,405.4
2317,151.1
2417,896.8
2518,642.5
2619,388.2
2720,133.9
2820,879.6
2921,625.3
3022,371
3123,116.7
3223,862.4
3324,608.1
3425,353.8
3526,099.5
3626,845.2
3727,590.9
3828,336.6
3929,082.3
4029,828
4130,573.7
4231,319.4
4332,065.1
4432,810.8
4533,556.5
4634,302.2
4735,047.9
4835,793.6
4936,539.3
5037,285
5138,030.7
5238,776.4
5339,522.1
5440,267.8
5541,013.5
5641,759.2
5742,504.9
5843,250.6
5943,996.3
6044,742
6145,487.7
6246,233.4
6346,979.1
6447,724.8
6548,470.5
6649,216.2
6749,961.9
6850,707.6
6951,453.3
7052,199
7152,944.7
7253,690.4
7354,436.1
7455,181.8
7555,927.5
7656,673.2
7757,418.9
7858,164.6
7958,910.3
8059,656
8160,401.7
8261,147.4
8361,893.1
8462,638.8
8563,384.5
8664,130.2
8764,875.9
8865,621.6
8966,367.3
9067,113
9167,858.7
9268,604.4
9369,350.1
9470,095.8
9570,841.5
9671,587.2
9772,332.9
9873,078.6
9973,824.3
10074,570
10175,315.7
10276,061.4
10376,807.1
10477,552.8
10578,298.5
10679,044.2
10779,789.9
10880,535.6
10981,281.3
11082,027
11182,772.7
11283,518.4
11384,264.1
11485,009.8
11585,755.5
11686,501.2
11787,246.9
11887,992.6
11988,738.3
12089,484
12190,229.7
12290,975.4
12391,721.1
12492,466.8
12593,212.5
Horsepower (hp)Watts (W)
12693,958.2
12794,703.9
12895,449.6
12996,195.3
13096,941
13197,686.7
13298,432.4
13399,178.1
13499,923.8
135100,669.5
136101,415.2
137102,160.9
138102,906.6
139103,652.3
140104,398
141105,143.7
142105,889.4
143106,635.1
144107,380.8
145108,126.5
146108,872.2
147109,617.9
148110,363.6
149111,109.3
150111,855
151112,600.7
152113,346.4
153114,092.1
154114,837.8
155115,583.5
156116,329.2
157117,074.9
158117,820.6
159118,566.3
160119,312
161120,057.7
162120,803.4
163121,549.1
164122,294.8
165123,040.5
166123,786.2
167124,531.9
168125,277.6
169126,023.3
170126,769
171127,514.7
172128,260.4
173129,006.1
174129,751.8
175130,497.5
176131,243.2
177131,988.9
178132,734.6
179133,480.3
180134,226
181134,971.7
182135,717.4
183136,463.1
184137,208.8
185137,954.5
186138,700.2
187139,445.9
188140,191.6
189140,937.3
190141,683
191142,428.7
192143,174.4
193143,920.1
194144,665.8
195145,411.5
196146,157.2
197146,902.9
198147,648.6
199148,394.3
200149,140
201149,885.7
202150,631.4
203151,377.1
204152,122.8
205152,868.5
206153,614.2
207154,359.9
208155,105.6
209155,851.3
210156,597
211157,342.7
212158,088.4
213158,834.1
214159,579.8
215160,325.5
216161,071.2
217161,816.9
218162,562.6
219163,308.3
220164,054
221164,799.7
222165,545.4
223166,291.1
224167,036.8
225167,782.5
226168,528.2
227169,273.9
228170,019.6
229170,765.3
230171,511
231172,256.7
232173,002.4
233173,748.1
234174,493.8
235175,239.5
236175,985.2
237176,730.9
238177,476.6
239178,222.3
240178,968
241179,713.7
242180,459.4
243181,205.1
244181,950.8
245182,696.5
246183,442.2
247184,187.9
248184,933.6
249185,679.3
250186,425
Horsepower (hp)Watts (W)
251187,170.7
252187,916.4
253188,662.1
254189,407.8
255190,153.5
256190,899.2
257191,644.9
258192,390.6
259193,136.3
260193,882
261194,627.7
262195,373.4
263196,119.1
264196,864.8
265197,610.5
266198,356.2
267199,101.9
268199,847.6
269200,593.3
270201,339
271202,084.7
272202,830.4
273203,576.1
274204,321.8
275205,067.5
276205,813.2
277206,558.9
278207,304.6
279208,050.3
280208,796
281209,541.7
282210,287.4
283211,033.1
284211,778.8
285212,524.5
286213,270.2
287214,015.9
288214,761.6
289215,507.3
290216,253
291216,998.7
292217,744.4
293218,490.1
294219,235.8
295219,981.5
296220,727.2
297221,472.9
298222,218.6
299222,964.3
300223,710
301224,455.7
302225,201.4
303225,947.1
304226,692.8
305227,438.5
306228,184.2
307228,929.9
308229,675.6
309230,421.3
310231,167
311231,912.7
312232,658.4
313233,404.1
314234,149.8
315234,895.5
316235,641.2
317236,386.9
318237,132.6
319237,878.3
320238,624
321239,369.7
322240,115.4
323240,861.1
324241,606.8
325242,352.5
326243,098.2
327243,843.9
328244,589.6
329245,335.3
330246,081
331246,826.7
332247,572.4
333248,318.1
334249,063.8
335249,809.5
336250,555.2
337251,300.9
338252,046.6
339252,792.3
340253,538
341254,283.7
342255,029.4
343255,775.1
344256,520.8
345257,266.5
346258,012.2
347258,757.9
348259,503.6
349260,249.3
350260,995
351261,740.7
352262,486.4
353263,232.1
354263,977.8
355264,723.5
356265,469.2
357266,214.9
358266,960.6
359267,706.3
360268,452
361269,197.7
362269,943.4
363270,689.1
364271,434.8
365272,180.5
366272,926.2
367273,671.9
368274,417.6
369275,163.3
370275,909
371276,654.7
372277,400.4
373278,146.1
374278,891.8
375279,637.5
Horsepower (hp)Watts (W)
376280,383.2
377281,128.9
378281,874.6
379282,620.3
380283,366
381284,111.7
382284,857.4
383285,603.1
384286,348.8
385287,094.5
386287,840.2
387288,585.9
388289,331.6
389290,077.3
390290,823
391291,568.7
392292,314.4
393293,060.1
394293,805.8
395294,551.5
396295,297.2
397296,042.9
398296,788.6
399297,534.3
400298,280
401299,025.7
402299,771.4
403300,517.1
404301,262.8
405302,008.5
406302,754.2
407303,499.9
408304,245.6
409304,991.3
410305,737
411306,482.7
412307,228.4
413307,974.1
414308,719.8
415309,465.5
416310,211.2
417310,956.9
418311,702.6
419312,448.3
420313,194
421313,939.7
422314,685.4
423315,431.1
424316,176.8
425316,922.5
426317,668.2
427318,413.9
428319,159.6
429319,905.3
430320,651
431321,396.7
432322,142.4
433322,888.1
434323,633.8
435324,379.5
436325,125.2
437325,870.9
438326,616.6
439327,362.3
440328,108
441328,853.7
442329,599.4
443330,345.1
444331,090.8
445331,836.5
446332,582.2
447333,327.9
448334,073.6
449334,819.3
450335,565
451336,310.7
452337,056.4
453337,802.1
454338,547.8
455339,293.5
456340,039.2
457340,784.9
458341,530.6
459342,276.3
460343,022
461343,767.7
462344,513.4
463345,259.1
464346,004.8
465346,750.5
466347,496.2
467348,241.9
468348,987.6
469349,733.3
470350,479
471351,224.7
472351,970.4
473352,716.1
474353,461.8
475354,207.5
476354,953.2
477355,698.9
478356,444.6
479357,190.3
480357,936
481358,681.7
482359,427.4
483360,173.1
484360,918.8
485361,664.5
486362,410.2
487363,155.9
488363,901.6
489364,647.3
490365,393
491366,138.7
492366,884.4
493367,630.1
494368,375.8
495369,121.5
496369,867.2
497370,612.9
498371,358.6
499372,104.3
500372,850