Power Units Converter — W, HP, Free | How to use and interpret results
Convert power among watts, kilowatts, megawatts and mechanical horsepower. Different horsepower definitions require care, particularly when a source specification uses metric PS.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
Numbers stay on your device. Nothing is sent to a server.
How to use this tool
Choose the value and source/target units. Do not enter energy in kWh as power in kW or assume that a vehicle's PS value is mechanical hp.
Results and examples
1 kW equals 1000 W and about 1.341 mechanical hp. This is a unit conversion rather than a calculation of motor efficiency or shaft losses.
Worked example
1 kW equals 1000 W and about 1.341 mechanical hp. This is a unit conversion rather than a calculation of motor efficiency or shaft losses.
Limitations
- Metric PS and other horsepower definitions are not selected automatically.
- Runtime, energy consumption, efficiency and cost are not calculated.
Fields
| Field | Guidance and constraints |
|---|---|
| Value | Accepted range: -1000000000000–1000000000000 · Input step: 0.001 |
| From | Watts / Kilowatts / Megawatts / Horsepower (mechanical) |
| To | Watts / Kilowatts / Megawatts / Horsepower (mechanical) |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
How many mechanical hp are in 1 kW?
1 kW equals 1000 W and about 1.341 mechanical hp. This is a unit conversion rather than a calculation of motor efficiency or shaft losses.
Can I input a kWh figure?
Metric PS and other horsepower definitions are not selected automatically. Runtime, energy consumption, efficiency and cost are not calculated.
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