Converting watts to horsepower is essential for understanding power ratings in various applications. One mechanical horsepower is approximately equal to 745.7 watts, while one metric horsepower equals about 735.5 watts. To convert watts to mechanical horsepower, divide the power in watts by 745.7. For example, 1,000 watts divided by 745.7 equals approximately 1.34 horsepower. Conversely, to convert horsepower to watts, multiply the horsepower value by 745.7. These conversions are crucial for accurately comparing and understanding power outputs across different systems and industries.