Power Converter
Translate between watts, kilowatts, horsepower, BTU/h, and more without reaching for a formula sheet.
1.341022 Horsepower (hp)
Compare in other units
Watt (W)
1,000
Megawatt (MW)
0.001
Gigawatt (GW)
0.000001
Electrical and mechanical power in sync
Whether you are sizing motors, comparing generator specs, or translating HVAC equipment ratings, this converter keeps watts, kilowatts, horsepower, and BTU/h aligned. Enter any value, swap directions instantly, and compare three additional units with one click.
All calculations route through watts, the SI base unit for power, so conversions remain consistent regardless of which system you start with.
Common use cases
- Compare household appliance draw between watts and horsepower ratings.
- Translate industrial motor specs from kilowatts to BTU/h for HVAC sizing.
- Benchmark renewable energy outputs across watts, kilowatts, and megawatts.
Accuracy notes
We use 745.699872 watts per mechanical horsepower and 735.49875 watts per metric horsepower. If you need a different definition (for example, boiler horsepower), add the factor manually and run it through the converter.
Copy the result to keep the full precision in your spreadsheet or calculator. The UI rounds to six decimal places for readability.
Sample conversions
- 2.4 kW
- ≈ 3.216 hp — typical for a compact EV onboard charger.
- 10 hp
- ≈ 7.46 kW — common for small industrial motors.
Related tools
- Need the energy over time? Pair this with the Energy Converter.
- Planning wiring or battery sizing? Use the Temperature Converter to keep thermal numbers consistent.
FAQ highlights
What about apparent power? This tool focuses on real power. For VA calculations, add power factor to your workflow—support for complex power is on the backlog.
Do you support boiler horsepower? Not yet. Let us know if that's critical for your projects and we'll prioritize it in a future cycle.