How many watts are in one horsepower?

How many watts are in one horsepower?

• A. 746 Watts
• B. 1000 Watts
• C. 500 Watts
• D. 875 Watts

Answer: (A)

Power is being converted from horsepower to watts. A mechanical horsepower is defined as 550 foot-pounds per second. Since 1 foot-pound per second equals about 1.355818 watts, multiply: 550 × 1.355818 ≈ 745.7 watts, which is commonly rounded to 746 watts. That’s why 746 watts is the standard conversion for one horsepower. The other options don’t match this established relationship—1000 watts is a kilowatt, not the horsepower conversion; 500 watts is roughly 0.67 horsepower; 875 watts isn’t a standard equivalent. If you ever encounter metric horsepower, that’s about 735.5 watts, which is a different definition.

Power is being converted from horsepower to watts. A mechanical horsepower is defined as 550 foot-pounds per second. Since 1 foot-pound per second equals about 1.355818 watts, multiply: 550 × 1.355818 ≈ 745.7 watts, which is commonly rounded to 746 watts. That’s why 746 watts is the standard conversion for one horsepower. The other options don’t match this established relationship—1000 watts is a kilowatt, not the horsepower conversion; 500 watts is roughly 0.67 horsepower; 875 watts isn’t a standard equivalent. If you ever encounter metric horsepower, that’s about 735.5 watts, which is a different definition.