How is horsepower calculated?

Power is work divided by time. For constant force along the direction of travel, P = force × distance ÷ time.

How many watts are in mechanical horsepower?

One mechanical horsepower is approximately 745.6999 watts.

No. One metric horsepower is 735.49875 watts, slightly less than mechanical horsepower.

Boiler horsepower is a heat-output unit equal to about 9,809.5 watts, not a motor shaft-power unit.

⌘K

Calculate power from force, distance, and time, or convert watts, kilowatts, horsepower, boiler horsepower, and BTU per hour.

Power

15.000000watts

Estimated result

Find horsepower from force, travel distance, and elapsed time, or convert among watts, kilowatts, four horsepower definitions, and BTU per hour.

power (watts) = force (newtons) × distance (meters) ÷ time (seconds). Conversion divides the watt value by the watt equivalent of the target unit.

10 N over 3 m in 2 seconds

The power is 10 × 3 ÷ 2 = 15 watts, equal to 0.02012 mechanical horsepower and 0.02039 metric horsepower.

Mechanical horsepower to watts

1 mechanical horsepower = 745.700 watts.

Motor input electricity and delivered shaft horsepower differ because of efficiency and power factor. Use nameplate data for equipment sizing.

How is horsepower calculated?: Power is work divided by time. For constant force along the direction of travel, P = force × distance ÷ time.
How many watts are in mechanical horsepower?: One mechanical horsepower is approximately 745.6999 watts.
Is metric horsepower the same?: No. One metric horsepower is 735.49875 watts, slightly less than mechanical horsepower.
What is boiler horsepower?: Boiler horsepower is a heat-output unit equal to about 9,809.5 watts, not a motor shaft-power unit.