Convert Mechanical Horsepower to Watts

Enter your mechanical horsepower value in the form below to get the value calculated in watts.

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Results in Watts:
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1 hp(I) = 745.699872 W

How to Convert Mechanical Horsepower to Watts

Convert mechanical horsepower to watts with this simple formula:

watts = mechanical horsepower × 745.699872

Converting a mechanical horsepower power measurement to a watt measurement involves multiplying the power by the conversion ratio to find the result. One mechanical horsepower is equal to 745.699872 watts, so to convert simply multiply by 745.699872.

For example, here's how to convert 5 mechanical horsepower to watts using the formula above.
5 hp(I) = (5 × 745.699872) = 3,728.499358 W

Mechanical horsepower and watts are both units used to measure power. Learn more about power and find more power measurement conversion calculators. Mechanical horsepower is a power measurement and can be abbreviated as hp(I), for example 1 hp(I). Watts are a power measurement and can be abbreviated as W, for example 1 W.

A watt is equal to the rate of energy of one joule per second and is a standard unit of power measurement under the International System of Units (SI). You might also find our watts to amps calculator or our watts to kilowatt-hours calculator useful.

Mechanical horsepower is often used to measure the output of engines and motors in North America and is equal to 745.69987158227022 watts, or joules per second. Electric horsepower is used to measure the output of electric motors and other electrical machines, and is equal to exactly 746 watts.

Check out our HP to amps calculator to convert power to current.

Convert Watts to Mechanical Horsepower

Mechanical Horsepower Measurements and Equivalent Watt Conversions

Common mechanical horsepower values converted to the equivalent watt value
Mechanical Horsepower Watts
1 hp(I) 745.7 W
2 hp(I) 1,491 W
3 hp(I) 2,237 W
4 hp(I) 2,983 W
5 hp(I) 3,728 W
6 hp(I) 4,474 W
7 hp(I) 5,220 W
8 hp(I) 5,966 W
9 hp(I) 6,711 W
10 hp(I) 7,457 W
11 hp(I) 8,203 W
12 hp(I) 8,948 W
13 hp(I) 9,694 W
14 hp(I) 10,440 W
15 hp(I) 11,185 W
16 hp(I) 11,931 W
17 hp(I) 12,677 W
18 hp(I) 13,423 W
19 hp(I) 14,168 W
20 hp(I) 14,914 W
21 hp(I) 15,660 W
22 hp(I) 16,405 W
23 hp(I) 17,151 W
24 hp(I) 17,897 W
25 hp(I) 18,642 W
26 hp(I) 19,388 W
27 hp(I) 20,134 W
28 hp(I) 20,880 W
29 hp(I) 21,625 W
30 hp(I) 22,371 W
31 hp(I) 23,117 W
32 hp(I) 23,862 W
33 hp(I) 24,608 W
34 hp(I) 25,354 W
35 hp(I) 26,099 W
36 hp(I) 26,845 W
37 hp(I) 27,591 W
38 hp(I) 28,337 W
39 hp(I) 29,082 W
40 hp(I) 29,828 W

More Mechanical Horsepower Power Conversions

Convert to Microwatts
1 hp(I) is equal to 745,699,871.6 microwatts
Convert to Milliwatts
1 hp(I) is equal to 745,699.9 milliwatts
Convert to Kilowatts
1 hp(I) is equal to 0.7457 kilowatts
Convert to Megawatts
1 hp(I) is equal to 0.000746 megawatts
Convert to Electric Horsepower
1 hp(I) is equal to 0.999598 electric horsepower
Convert to Btu Per Hour
1 hp(I) is equal to 2,544.43 btu per hour
Convert to Kilocalories Per Hour
1 hp(I) is equal to 641.615691 kilocalories per hour