Convert Mechanical Horsepower to Watts

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

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

How to Convert Mechanical Horsepower to Watts Using an Easy Conversion Formula

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 your power by the conversion ratio to find the result. A mechanical horsepower is equal to 745.699872 watts, so to convert simply multiply by 745.699872.

For example:
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. A mechanical horsepower is a power measurement and can be abbreviated as hp(I), for example 1 hp(I). A watt is 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.

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 Power Conversions

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