One Horse Power is equal to ______ Watt. 

The correct answer is 746 Watt.

Key Points

• One Horsepower (HP) is defined as 746 watts (W).
• The term "horsepower" was coined by James Watt, the inventor of the steam engine, to compare the output of steam engines with the power of draft horses.
• Horsepower is a unit of measurement of power, or the rate at which work is done, commonly used in reference to the output of engines and motors.
• 1 HP is equivalent to lifting 550 pounds (lb) one foot (ft) in one second.

Additional Information

• Watts:
  • A watt is a unit of power in the International System of Units (SI) equivalent to one joule per second.
  • It is used to quantify the rate of energy transfer.
• James Watt:
  • James Watt was a Scottish inventor and mechanical engineer whose improvements to the steam engine were fundamental to the changes brought by the Industrial Revolution.
  • The unit of power "watt" was named in his honor.
• Power Measurement:
  • Power is the rate at which work is done or energy is transferred over time.
  • Other common units of power include kilowatts (kW), megawatts (MW), and British thermal units per hour (BTU/h).
• Engine and Motor Ratings:
  • Horsepower is commonly used to rate the power output of engines, especially in automotive and industrial contexts.
  • Electrical motors are often rated in both horsepower and watts or kilowatts.