1. What is an Electric HP to kW Calculator?

Definition: This calculator converts power measurements from horsepower (HP) to kilowatts (kW).

Purpose: It helps electrical engineers, technicians, and DIYers convert between these common power units for motor specifications and electrical system design.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{kW} \) — Power in kilowatts
• \( HP \) — Power in horsepower

Explanation: The conversion factor 0.746 comes from the exact definition that 1 HP equals exactly 746 watts (0.746 kW).

3. Importance of Power Unit Conversion

Details: Proper conversion ensures accurate motor specifications, correct electrical system sizing, and compliance with international standards.

4. Using the Calculator

Tips: Simply enter the horsepower value and the calculator will instantly provide the equivalent in kilowatts.

5. Frequently Asked Questions (FAQ)

Q1: Is this conversion factor exact?
A: Yes, 1 HP is exactly equal to 746 watts by definition.

Q2: Does this apply to all types of horsepower?
A: This conversion is specifically for electric horsepower. Mechanical or metric horsepower use slightly different values.

Q3: Why convert HP to kW?
A: Kilowatts are the standard SI unit for power and are used in most electrical calculations and specifications.

Q4: How precise is this conversion?
A: The conversion is mathematically exact, though practical applications may round results to 2-3 decimal places.

Q5: Can I convert kW back to HP?
A: Yes, simply divide the kW value by 0.746 to get HP.