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HP to Watts Converter

Convert horsepower to watts in one step. Results update live in both directions, with a worked formula, nearby units and a 1–100 chart you can click.

HorsepowerFrom

WattsTo

Decimal places

Step-by-step calculation

How to use the HP to Watts Converter

Type a value in the Horsepower box. The watts result appears instantly.
Going the other way? Type in the Watts box, or press the ⇄ swap button.
Set the precision with the decimal places menu.
Check the working in the step-by-step box, then press Copy result or click any row in the tables below.

Horsepower to watts formula

W = hp × 745.6998716

Take the value in horsepower.
Multiply it by 745.6998716 (the number of watts in one horsepower).

Example: 1 hp × 745.6998716 = 745.7 W.

Reverse formula (watts to horsepower): hp = W ÷ 745.6998716. Example: 149,140 W ÷ 745.6998716 = 200 hp.

Quick mental estimate: multiply by about 750. For exact answers use the converter above.

hp to W conversion table (1–100)

Click any row to load it into the converter.

Horsepower to watts

Horsepower	Watts
1 hp	745.7 W
2 hp	1,491.4 W
3 hp	2,237.1 W
4 hp	2,982.8 W
5 hp	3,728.5 W
6 hp	4,474.2 W
7 hp	5,219.9 W
8 hp	5,965.6 W
9 hp	6,711.3 W
10 hp	7,457 W
11 hp	8,202.7 W
12 hp	8,948.4 W
13 hp	9,694.1 W
14 hp	10,439.8 W
15 hp	11,185.5 W
16 hp	11,931.2 W
17 hp	12,676.9 W
18 hp	13,422.6 W
19 hp	14,168.3 W
20 hp	14,914 W
21 hp	15,659.7 W
22 hp	16,405.4 W
23 hp	17,151.1 W
24 hp	17,896.8 W
25 hp	18,642.5 W
26 hp	19,388.2 W
27 hp	20,133.9 W
28 hp	20,879.6 W
29 hp	21,625.3 W
30 hp	22,371 W
31 hp	23,116.7 W
32 hp	23,862.4 W
33 hp	24,608.1 W
34 hp	25,353.8 W
35 hp	26,099.5 W
36 hp	26,845.2 W
37 hp	27,590.9 W
38 hp	28,336.6 W
39 hp	29,082.29 W
40 hp	29,827.99 W
41 hp	30,573.69 W
42 hp	31,319.39 W
43 hp	32,065.09 W
44 hp	32,810.79 W
45 hp	33,556.49 W
46 hp	34,302.19 W
47 hp	35,047.89 W
48 hp	35,793.59 W
49 hp	36,539.29 W
50 hp	37,284.99 W
51 hp	38,030.69 W
52 hp	38,776.39 W
53 hp	39,522.09 W
54 hp	40,267.79 W
55 hp	41,013.49 W
56 hp	41,759.19 W
57 hp	42,504.89 W
58 hp	43,250.59 W
59 hp	43,996.29 W
60 hp	44,741.99 W
61 hp	45,487.69 W
62 hp	46,233.39 W
63 hp	46,979.09 W
64 hp	47,724.79 W
65 hp	48,470.49 W
66 hp	49,216.19 W
67 hp	49,961.89 W
68 hp	50,707.59 W
69 hp	51,453.29 W
70 hp	52,198.99 W
71 hp	52,944.69 W
72 hp	53,690.39 W
73 hp	54,436.09 W
74 hp	55,181.79 W
75 hp	55,927.49 W
76 hp	56,673.19 W
77 hp	57,418.89 W
78 hp	58,164.59 W
79 hp	58,910.29 W
80 hp	59,655.99 W
81 hp	60,401.69 W
82 hp	61,147.39 W
83 hp	61,893.09 W
84 hp	62,638.79 W
85 hp	63,384.49 W
86 hp	64,130.19 W
87 hp	64,875.89 W
88 hp	65,621.59 W
89 hp	66,367.29 W
90 hp	67,112.99 W
91 hp	67,858.69 W
92 hp	68,604.39 W
93 hp	69,350.09 W
94 hp	70,095.79 W
95 hp	70,841.49 W
96 hp	71,587.19 W
97 hp	72,332.89 W
98 hp	73,078.59 W
99 hp	73,824.29 W
100 hp	74,569.99 W

Watts to horsepower

Watts	Horsepower
1 W	0 hp
2 W	0 hp
3 W	0 hp
4 W	0.01 hp
5 W	0.01 hp
6 W	0.01 hp
7 W	0.01 hp
8 W	0.01 hp
9 W	0.01 hp
10 W	0.01 hp
11 W	0.01 hp
12 W	0.02 hp
13 W	0.02 hp
14 W	0.02 hp
15 W	0.02 hp
16 W	0.02 hp
17 W	0.02 hp
18 W	0.02 hp
19 W	0.03 hp
20 W	0.03 hp
21 W	0.03 hp
22 W	0.03 hp
23 W	0.03 hp
24 W	0.03 hp
25 W	0.03 hp
26 W	0.03 hp
27 W	0.04 hp
28 W	0.04 hp
29 W	0.04 hp
30 W	0.04 hp
31 W	0.04 hp
32 W	0.04 hp
33 W	0.04 hp
34 W	0.05 hp
35 W	0.05 hp
36 W	0.05 hp
37 W	0.05 hp
38 W	0.05 hp
39 W	0.05 hp
40 W	0.05 hp
41 W	0.05 hp
42 W	0.06 hp
43 W	0.06 hp
44 W	0.06 hp
45 W	0.06 hp
46 W	0.06 hp
47 W	0.06 hp
48 W	0.06 hp
49 W	0.07 hp
50 W	0.07 hp
51 W	0.07 hp
52 W	0.07 hp
53 W	0.07 hp
54 W	0.07 hp
55 W	0.07 hp
56 W	0.08 hp
57 W	0.08 hp
58 W	0.08 hp
59 W	0.08 hp
60 W	0.08 hp
61 W	0.08 hp
62 W	0.08 hp
63 W	0.08 hp
64 W	0.09 hp
65 W	0.09 hp
66 W	0.09 hp
67 W	0.09 hp
68 W	0.09 hp
69 W	0.09 hp
70 W	0.09 hp
71 W	0.1 hp
72 W	0.1 hp
73 W	0.1 hp
74 W	0.1 hp
75 W	0.1 hp
76 W	0.1 hp
77 W	0.1 hp
78 W	0.1 hp
79 W	0.11 hp
80 W	0.11 hp
81 W	0.11 hp
82 W	0.11 hp
83 W	0.11 hp
84 W	0.11 hp
85 W	0.11 hp
86 W	0.12 hp
87 W	0.12 hp
88 W	0.12 hp
89 W	0.12 hp
90 W	0.12 hp
91 W	0.12 hp
92 W	0.12 hp
93 W	0.12 hp
94 W	0.13 hp
95 W	0.13 hp
96 W	0.13 hp
97 W	0.13 hp
98 W	0.13 hp
99 W	0.13 hp
100 W	0.13 hp

Common values

Horsepower	Watts	Example
1 hp	745.7 W	1 hp
5 hp	3,728.5 W	Lawn mower
10 hp	7,457 W	10 hp
100 hp	74,569.99 W	Small car
150 hp	111,854.98 W	150 hp
200 hp	149,139.97 W	Family car
300 hp	223,709.96 W	300 hp
500 hp	372,849.94 W	Sports car
1,000 hp	745,699.87 W	Hypercar

About horsepower and watts

Horsepower (hp). Mechanical (imperial) horsepower is 550 foot-pounds per second, about 745.7 watts. Metric horsepower (PS) is slightly smaller at 735.5 W.

Watts (W). The watt is the SI unit of power: one joule per second.

Frequently asked questions

What is 1 horsepower in watts?

One horsepower equals 745.7 watts.

How do you convert horsepower to watts?

Multiply the number of horsepower by 745.6998716. For example, 1 hp × 745.6998716 = 745.7 W.

What is 200 horsepower in watts?

200 hp is 149,140 W (family car).

How much is 500 horsepower in watts?

500 horsepower equals 372,850 watts.

How do I convert watts back to horsepower?

Divide by 745.6998716, or press the ⇄ swap button above. For example, 149,140 W ÷ 745.6998716 = 200 hp.

Which horsepower does this use?

Mechanical (imperial) horsepower: 1 hp = 745.7 W. Metric horsepower (PS, CV) is 735.5 W, and electrical horsepower is exactly 746 W, so figures can differ by about 1.4% between brochures.

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