Power Converter Online Free
Convert power units instantly. Switch between watts, kilowatts, megawatts, horsepower, BTU per hour, calories per second and more.
Convert Power
1 MW = 1,000,000 W
1 mechanical hp = 745.699872 W
1 BTU/h = 0.293071 W
Result
Popular Conversions
How to Use the Power Converter
Convert power units in three simple steps.
1. Enter power
Type the power value you want to convert.
2. Choose units
Select the original power unit and the target unit.
3. View result
See the converted value and common power equivalents instantly.
Fast power conversion for electricity, engines and HVAC.
This Power Converter helps students, electricians, engineers, mechanics and everyday users convert power values across electrical, mechanical and heating units with accurate browser-based calculations.
You can convert watts, kilowatts, megawatts, gigawatts, mechanical horsepower, metric horsepower, BTU per hour, calories per second, joules per second and more.
What is a power converter?
A power converter changes power values from one unit to another, such as watts to kilowatts, kilowatts to horsepower or BTU per hour to watts.
It is useful for electricity, engines, HVAC systems, mechanical calculations, heating and cooling, engineering, appliances and energy-related projects.
When should you use it?
- Converting watts to kilowatts
- Changing horsepower to watts
- Comparing kW, MW and HP
- Working with BTU per hour for HVAC
- Checking electrical and mechanical power values
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Power Converter FAQ
Common questions about converting power units.
How many watts are in one kilowatt?
One kilowatt equals exactly 1,000 watts.
How many watts are in one horsepower?
One mechanical horsepower equals approximately 745.699872 watts.
What is BTU per hour?
BTU per hour is a power unit commonly used for heating and cooling systems.
Does this converter use a backend?
No. All power conversions run directly in your browser with HTML, CSS and JavaScript.
Can I convert kW to horsepower?
Yes. Select kilowatt as the original unit and horsepower as the target unit to convert instantly.
What is the difference between watt and kilowatt?
One kilowatt is 1,000 watts. Kilowatts are commonly used for larger electrical loads.
Can I copy the power conversion result?
Yes. Click Copy Result to copy the current power conversion.
Does it work on mobile?
Yes. This power converter works on desktop, tablet and mobile browsers.