1. What is HP to kW Conversion?

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

Purpose: It helps engineers, electricians, and technicians work with power specifications across different measurement systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: 1 mechanical horsepower equals exactly 0.74569987 kilowatts. For practical purposes, we use 0.746 as the conversion factor.

3. Importance of Power Unit Conversion

Details: Converting between HP and kW is essential for:

• Proper motor sizing and selection
• Electrical system design
• Energy efficiency calculations
• International equipment specifications

4. Using the Calculator

Tips: Simply enter the horsepower value (must be > 0) and the calculator will instantly provide the equivalent in kilowatts.

5. Frequently Asked Questions (FAQ)

Q1: Is this conversion factor exact?
A: The exact conversion is 1 HP = 0.74569987 kW, but 0.746 is used for practical calculations.

Q2: Does this work for all types of horsepower?
A: This calculator uses mechanical horsepower. Metric horsepower (PS) uses a different conversion factor (1 PS = 0.7355 kW).

Q3: Why convert HP to kW?
A: kW is the standard unit in electrical engineering and most international specifications.

Q4: How precise is this conversion?
A: The 0.746 factor provides precision sufficient for most engineering applications.

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