1. What is a Horsepower to kW Calculator?

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

Purpose: It helps engineers, mechanics, and technicians convert between these common power units used in automotive, industrial, and electrical applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

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

Explanation: 1 horsepower is equivalent to approximately 0.746 kilowatts. This conversion factor is derived from the definition of mechanical horsepower.

3. Importance of Power Unit Conversion

Details: Accurate conversion between horsepower and kilowatts is essential for equipment specification, energy calculations, and international standards compliance.

4. Using the Calculator

Tips: Simply enter the horsepower value (must be > 0) and the calculator will automatically compute the equivalent kilowatts.

5. Frequently Asked Questions (FAQ)

Q1: What's the exact conversion factor?
A: 1 HP = 0.745699872 kW (typically rounded to 0.746 for practical calculations).

Q2: Are there different types of horsepower?
A: Yes, this calculator uses mechanical horsepower (550 ft·lbf/s). Metric horsepower (PS) uses a different conversion factor (1 PS = 0.7355 kW).

Q3: When would I need this conversion?
A: When comparing engine specifications, sizing electrical systems, or working with international standards that use different units.

Q4: How precise is this conversion?
A: The 0.746 factor provides precision sufficient for most practical applications. For exact calculations, use 0.745699872.

Q5: Can I convert kW back to HP?
A: Yes, divide kW by 0.746 (or multiply by 1.341) to get horsepower.