Convert kW to HP Calculator

Horsepower Formula:

\[ HP = P_{kW} \times 1.341 \]

Horsepower (HP):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is a kW to HP Calculator?

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

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:

\[ HP = P_{kW} \times 1.341 \]

Where:

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

Explanation: 1 kilowatt is approximately equal to 1.341 horsepower. This conversion factor is derived from the exact definition of 1 HP = 745.7 watts.

3. Importance of Power Unit Conversion

Details: Accurate conversion between kW and HP is essential for equipment specification, performance comparisons, and compliance with different measurement standards.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between kW and HP?
A: Kilowatts (kW) are the metric unit of power, while horsepower (HP) is an imperial unit commonly used for engines and motors.

Q2: Is this mechanical or electrical horsepower?
A: This calculator uses mechanical horsepower (1 HP = 745.7 W). Metric horsepower is slightly different (1 HP = 735.5 W).

Q3: Why is the conversion factor 1.341?
A: It's derived from the exact conversion where 1 kW = 1000 W and 1 HP = 745.7 W, so 1000/745.7 ≈ 1.341.

Q4: How precise is this conversion?
A: The conversion is precise to 4 decimal places (1.34102), though we display results to 3 decimal places for readability.

Q5: Can I convert HP back to kW?
A: Yes, use the inverse formula: kW = HP / 1.341 or use our HP to kW calculator.