Quick Answer:
1 horsepower = 745.699872 watts. To convert horsepower to watts, multiply the horsepower value by 745.699872.
Horsepower and watts measure power in automotive, electrical, and industrial applications.
Detailed Overview: Horsepower to Watts
A mechanical horsepower is 745.699872 watts. A watt is the SI unit of power equal to one joule per second. Multiply horsepower by 745.699872 for watts. Multiply watts by 0.00134102 for horsepower. Used in engine specs, electric motors, and appliance ratings. A 300-horsepower engine produces 223,710 watts.
Conversion Reference Table
1 hp = 745.6999 W, 5 hp = 3,728.4994 W, 10 hp = 7,456.9987 W, 50 hp = 37,284.9936 W, 100 hp = 74,569.9872 W, 300 hp = 223,709.9616 W
Practical Calculation Example
Convert 15 horsepower: watts = 15 × 745.699872 = 11,185.50 W. Reverse: 5,000 W = 5,000 × 0.00134102 = 6.71 hp
Key Takeaways
1 horsepower = 745.699872 watts. Multiply horsepower by 745.699872. Multiply watts by 0.00134102.
THE AUTORANK Editorial Note: Electric motors are rated in kW while engines use horsepower, so convert both to watts for accurate comparison.
Frequently Asked Questions
Q: How do I convert horsepower to watts quickly?
A: Multiply the horsepower value by 746 for a fast estimate. Example: 10 hp × 746 = 7,460 W, close to the exact 7,457 W.
A: Multiply the horsepower value by 746 for a fast estimate. Example: 10 hp × 746 = 7,460 W, close to the exact 7,457 W.
Q: Is 1 horsepower exactly 750 watts?
A: No, 1 mechanical horsepower equals 745.699872 watts. 750 is a rounded approximation.
A: No, 1 mechanical horsepower equals 745.699872 watts. 750 is a rounded approximation.
The horsepower to watt factor of 745.699872 is essential for comparing engine and motor power.
Related Converters: Watts to Horsepower | Joules to Calories