Horsepower to kW Calculator
Convert mechanical horsepower to kilowatts using the exact conversion constant.
Amortization schedule
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Showing first 12 of months.
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Introduction
Horsepower to kW Calculator — Convert mechanical horsepower to kilowatts using the exact conversion constant. Enter Horsepower (HP) to get an instant, accurate result.
Formula
kW = Horsepower × 0.745699872, using the standard mechanical horsepower to kilowatt conversion constant (1 hp = 745.699872 W).
Step-by-step
- Enter the Horsepower (HP).
- Click Calculate to see your result instantly.
Real-world example
Example: With Horsepower (HP) = 5, the Horsepower to kW Calculator gives Kw: 3.7285.
Frequently Asked Questions
Is this the same as metric horsepower?
No — this uses mechanical (imperial) horsepower (745.699872 W). Metric horsepower (PS/CV), used in some countries, is slightly different at about 735.499 W — check which definition your source specifies.
What is this conversion commonly used for?
Comparing motor nameplate horsepower ratings (common in the US) against kilowatt-based electrical power specifications used elsewhere, or calculating a motor's expected electrical input power alongside its efficiency.
What inputs does the Horsepower to kW Calculator need?
You'll need to provide: Horsepower (HP). All fields use sensible defaults, so you can see a working example immediately and then adjust the values to match your own numbers.
How accurate is the Horsepower to kW Calculator?
The Horsepower to kW Calculator applies the formula exactly as calculated — kW = Horsepower × 0.745699872, using the standard mechanical horsepower to kilowatt conversion constant (1 hp = 745.699872 W). — so results are precise for the inputs you provide. Accuracy depends on entering correct, realistic input values.
Is the Horsepower to kW Calculator free to use?
Yes, the Horsepower to kW Calculator is completely free, requires no signup, and runs instantly in your browser.
About the Horsepower to kW Calculator
The Horsepower to kW Calculator uses a real, verifiable formula — kW = Horsepower × 0.745699872, using the standard mechanical horsepower to kilowatt conversion constant (1 hp = 745.699872 W). — so results are accurate every time, not an approximation.