How many horsepower are in one watt?

There are 0.001341022 horsepower in 1 watt.

How do you convert horsepower to watts?

Multiply the number of horsepower by 745.699872 — or use the formula W = hp × 745.699872.

What is 6 horsepower in watts?

6 horsepower is 4,474.19923 watts. 6 × 745.699872 = 4,474.19923 watts.

Is the horsepower to watts conversion exact?

The factor 745.699871582 is a rounded value because at least one of these units is defined by measurement rather than by an exact definition.

Horsepower to Watts Converter

Convert horsepower to watts instantly with this free horsepower to watts converter. Enter any value to get an accurate power conversion, plus the formula, the conversion factor and a full reference table.

What is 1 horsepower in watts?

1 horsepower is equal to 745.699872 watts.

1 × 745.699872 = 745.699872 watts

Amount

Result745.6998716

1 horsepower = 745.6998716 watts

Horsepower to Watts formula

W = hp × 745.699872

The horsepower to watts conversion factor is 745.699871582 (rounded). 1 horsepower = 745.699871582 watts, and 1 watt = 0.00134102209 horsepower.

Regional note. Mechanical horsepower (745.7 W) and metric horsepower / PS (735.5 W) differ by about 1.4%. This page uses mechanical horsepower.

Worked examples

2 horsepower = 1,491.39974 watts — 2 × 745.699872 = 1,491.39974 watts
6 horsepower = 4,474.19923 watts — 6 × 745.699872 = 4,474.19923 watts
10 horsepower = 7,456.99872 watts — 10 × 745.699872 = 7,456.99872 watts

Horsepower to Watts conversion table

Every value below is calculated with the exact conversion factor and rounded for display.

horsepower to watts conversion table
Horsepower (hp)	Watts (W)
1 hp	745.69987 W
2 hp	1,491.3997 W
3 hp	2,237.0996 W
4 hp	2,982.7995 W
5 hp	3,728.4994 W
6 hp	4,474.1992 W
7 hp	5,219.8991 W
8 hp	5,965.599 W
9 hp	6,711.2988 W
10 hp	7,456.9987 W
12 hp	8,948.3985 W
15 hp	11,185.498 W
20 hp	14,913.997 W
25 hp	18,642.497 W
30 hp	22,370.996 W
50 hp	37,284.994 W
75 hp	55,927.49 W
100 hp	74,569.987 W
500 hp	372,849.94 W
1,000 hp	745,699.87 W

When you need to convert horsepower to watts

Comparing engine or motor output quoted in horsepower, metric horsepower or kilowatts.
Sizing heating and cooling equipment rated in BTU per hour or watts.

Common mistakes to avoid

Dividing when you should multiply. Because 1 horsepower = 745.7 watts, the answer should be larger than the number you started with.
Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.

How precise does the answer need to be?

Round only at the end, and only to the precision your task actually needs. The converter above keeps full double precision internally and rounds for display.

How these units are defined

Horsepower (hp): Mechanical horsepower: exactly 550 foot-pounds per second. The accepted value is a measured or conventional figure rather than an exact definition, so the factor shown is rounded.
Watt (W): The SI unit of power: one joule per second. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.

Frequently asked questions

What is 1 horsepower in watts?: 1 horsepower is equal to 745.699872 watts.
How many horsepower are in one watt?: There are 0.001341022 horsepower in 1 watt.
How do you convert horsepower to watts?: Multiply the number of horsepower by 745.699872 — or use the formula W = hp × 745.699872.
What is 6 horsepower in watts?: 6 horsepower is 4,474.19923 watts. 6 × 745.699872 = 4,474.19923 watts.
Is the horsepower to watts conversion exact?: The factor 745.699871582 is a rounded value because at least one of these units is defined by measurement rather than by an exact definition.
Does this use US or Imperial watts?: Mechanical horsepower (745.7 W) and metric horsepower / PS (735.5 W) differ by about 1.4%. This page uses mechanical horsepower.