hp to kw Converter - Quick Calculator
Convert hp to kw accurately with our fast calculator. Perfect for engineers, mechanics, and students needing reliable horsepower to kilowatt conversions.
Horsepower (Mechanical)
Kilowatt
How to convert hp to kw
Transform mechanical horsepower units into precise kilowatt values in seconds.
Enter the horsepower value
Type the number of hp you want to convert into the input field.
Select the horsepower type
Choose between mechanical hp or metric PS depending on your engine spec.
Get the kilowatt result
Click convert to instantly view the equivalent power output in kW.
Why use this hp to kw Converter?
Eliminate manual math errors and standardize power ratings across international standards.
The Mathematical Formula
For mechanical hp: kW = hp × 0.7457. For metric PS: kW = PS × 0.7355. This constant derives from James Watt's original 1782 horsepower definition.
Precision for Engineering
Get results rounded to four decimal places, ideal for technical specifications and academic work.
Supports Multiple Standards
Convert both imperial mechanical horsepower and metric PS ratings used across Europe and Asia.
Quick Reference
| Horsepower (Mechanical) | Kilowatt |
|---|---|
| 1 hp | 0.7457 kw |
| 2 hp | 1.4914 kw |
| 5 hp | 3.7285 kw |
| 10 hp | 7.457 kw |
| 20 hp | 14.914 kw |
| 50 hp | 37.285 kw |
Practical Examples of hp to kw
Real-world scenarios where this conversion is useful.
Family Sedan Engine
A typical 200 hp car engine equals 149.14 kW of output power.
Industrial Pump Motor
A 25 hp pump motor produces 18.64 kW suitable for factory water systems.
Riding Lawn Mower
A 18 hp mower engine generates roughly 13.42 kW for residential turf care.
Marine Outboard Motor
A 350 hp boat engine delivers 260.99 kW for high-speed watercraft propulsion.
Frequently Asked Questions
Common queries regarding this specific conversion.
Q.What is the difference between hp and kW?
Horsepower measures mechanical power, while kilowatts measure electrical power. One mechanical hp equals 0.7457 kW.
Q.How many kW is 1 hp?
One mechanical horsepower equals 0.7457 kW, and one metric horsepower equals 0.7355 kW.
Q.Is metric horsepower the same as PS?
Yes, PS (Pferdestärke) is the German term for metric horsepower, which equals 735.5 watts exactly.
Q.Why convert hp to kW?
Most international regulations, EV specs, and scientific publications use kilowatts, so conversion ensures compliance and clarity.
Discover Related Tools
Need to convert back? Use the reverse Kilowatt to Horsepower (Mechanical) calculator. For other measurements, explore our complete suite of Power & Electricity Converters or the full Unit Converter Hub.