Power Converter
Convert power between Watts, Kilowatts, Horsepower (HP), and BTU/h.
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1Enter data
Enter content, paste text or load a file from disk. -
2Click the button
The tool will immediately process your data in the browser. -
3Get the result
Copy the finished text or save the file to your device.
return "Result ready in 0.1s";
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Other tools you may find usefulOnline Power Conversion Calculator - W, kW, HP, MW, BTU and more
Power Conversion Calculator is a practical tool that converts watts to kilowatts, horsepower to watts, BTU per hour to kilowatts and many other combinations in seconds. You enter the value, select the units, and the result appears immediately, making it much easier to work with energy data, electrical projects and physics tasks.
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Power Conversion Calculator Power Unit Converter Watts to Kilowatts Converter kW to HP Calculator BTU to W Converter
What this is the Power Conversion Calculator
The Power Conversion Calculator is an online converter of units of energy in time, i.e. power. It allows you to convert values saved in watts, kilowatts, megawatts, horsepower, BTU per hour or calories per second into other units that are needed in the calculations. Thanks to this, you don't have to remember all the conversion rates, because the tool will do it for you automatically and repeatably.
This is especially useful when you work with documentation in different unit systems in parallel, for example in international projects, in technical materials from manufacturers or in English-language literature. One tool replaces several conversion tables and a manual calculator, which immediately translates into fewer errors and faster work.
Why use the Power Conversion Calculator
Converting power units manually can be tedious and error-prone, especially when you need to quickly compare several alternative solutions or reports. The power conversion calculator automates this process and ensures you are using the correct factors and the correct number of decimal places.
Speed and precision
Just one value, two unit selections and one click to see the power conversion result. The tool automatically applies the appropriate coefficients, so you save time and avoid mistakes that often appear when counting on paper or in your head.
A tool for many industries
The power unit converter is useful for electrical engineers, HVAC system designers, mechanics and energy specialists, but it also supports teachers, students and physics enthusiasts. Thanks to this, one tool handles both simple home tasks and advanced professional projects.
Fewer miscalculations
An error in power conversion may mean a poorly selected motor, oversized protection devices or incorrectly estimated energy consumption. The power conversion calculator uses established relationships and uses the same, proven formulas every time, so the results are consistent and easy to repeat.
Online availability
The tool works without installation and without logging in, and all you need to use it is a browser. You can use it on a computer in the office, on a laptop during classes, and on a smartphone in the field when you need to quickly calculate the power of a device or the entire installation.
What power units does the calculator support
Power units describe the rate at which work is performed or energy is converted over time. The power conversion calculator includes both SI and automotive and imperial units.
- Watt (W)- the basic SI unit of power, equivalent to one joule per second.
- Kilowatt (kW)- 1 kW is 1000 W, a typical unit of power for home appliances and smaller installations.
- Megawatt (MW)- 1 MW i