1. What is Horsepower to Watts Conversion?

Definition: This calculator converts mechanical horsepower (HP) to its equivalent power in watts (W).

Purpose: It helps engineers, electricians, and technicians compare power ratings between different measurement systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_w \) — Power in watts (W)
• \( HP \) — Power in horsepower (HP)

Explanation: One mechanical horsepower is equivalent to 746 watts by definition.

3. Importance of Power Conversion

Details: Converting between horsepower and watts is essential when working with international specifications, electrical systems, or comparing engine and motor performance.

4. Using the Calculator

Tips: Simply enter the horsepower value (must be > 0) and the calculator will display the equivalent power in watts.

5. Frequently Asked Questions (FAQ)

Q1: Why 746 watts per horsepower?
A: This value comes from James Watt's original definition of horsepower based on the work a horse could do lifting coal from a mine.

Q2: Are there different types of horsepower?
A: Yes, this calculator uses mechanical horsepower (745.7W). Metric horsepower is 735.5W, and electrical horsepower is 746W.

Q3: How accurate is this conversion?
A: The conversion is mathematically exact for mechanical horsepower (1 HP = 745.699872 W, typically rounded to 746 W).

Q4: When would I need this conversion?
A: When comparing engine power to electrical requirements, sizing generators, or working with international equipment specifications.

Q5: Can I convert watts back to horsepower?
A: Yes, simply divide watts by 746 to get horsepower equivalent.