Power converter
Convert watts and defined horsepower units.
Power converter
Your result appears here
Adjust the values to see your result automatically.
How to use Power converter
The Power converter takes a power value and returns it in another unit: watts, kilowatts, megawatts, mechanical horsepower or metric horsepower. Mechanical horsepower is 745.69987158227 watts and metric horsepower is 735.49875 watts, so the tool keeps the two apart. You can set 1 to 15 significant digits and pick grouped, plain or scientific display.
- Adjust the values; an initial result is calculated from the defaults.
- Change the basic settings or open Advanced mode to fine-tune the result.
- Review and copy or download your result. Pause Live results to run manually. Sources or individual settings above 20,000 characters require an explicit run.
What this tool supports
Convert watts and defined horsepower units.
- Value
- Set this value for your task.
- From
- W · kW · MW · horsepower (mechanical) · horsepower (metric)
- To
- W · kW · MW · horsepower (mechanical) · horsepower (metric)
- Significant digits
- Range: 1 to 15
- Number display
- Standard (grouped) · Plain (no grouping) · Scientific notation
Limits and processing
Use finite numbers, valid dates and the ranges shown by each control. Invalid values produce an error without a downloadable result.
Frequently asked questions
How many watts are in one horsepower?
It depends on which horsepower you mean. Mechanical, or imperial, horsepower is 745.69987158227 watts, while metric horsepower is 735.49875 watts. Choose the matching unit from the list before reading the result.
How do I convert kW to horsepower?
Choose kW as the From unit and horsepower (mechanical) or horsepower (metric) as the To unit. With the mechanical definition, 1 kW is about 1.34102 hp; with the metric definition it is about 1.35962 hp.
Can this converter turn kilowatts into kilowatt-hours?
No. Kilowatts measure power and kilowatt-hours measure energy, so converting between them needs a time period. This tool only converts between power units; multiply kilowatts by hours yourself, or use an energy converter for kWh.
Where is my input processed?
This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.
What are the input limits?
Use finite numbers, valid dates and the ranges shown by each control. Invalid values produce an error without a downloadable result.