Power Converter
Convert between watts, kilowatts, horsepower, BTU/hour, and more instantly.
About Power Converter
Our Power Converter is a comprehensive tool that allows you to convert power measurements between different units seamlessly. Whether you're working on electrical engineering projects, HVAC calculations, or mechanical systems, this tool provides accurate conversions across twenty commonly used power units.
The tool supports conversions between Watt (W), Kilowatt (kW), Megawatt (MW), Gigawatt (GW), Milliwatt (mW), Microwatt (uW), Horsepower (hp), Metric Horsepower (PS), BTU/hour, BTU/minute, BTU/second, Joule/second, Calorie/second, Foot-pound/second, Foot-pound/minute, Erg/second, Volt-ampere (VA), Boiler Horsepower, Electric Horsepower, and Mechanical Horsepower. All conversions are calculated with high precision and displayed instantly as you type or change units.
Convert From
How to Use
Enter the Power Value
Type the numerical value of the power you want to convert in the "Power Value" field. You can enter whole numbers, decimals, or negative values. The input accepts any valid number.
Select the Original Unit
Choose the unit of your input value from the "From Unit" dropdown. Options include Watt (W), Kilowatt (kW), Horsepower (hp), BTU/hour, and many more power units.
Select the Target Unit
Choose the unit you want to convert to from the "To Unit" dropdown. You can also use the "Swap Units" button to quickly switch between the source and target units.
View Results
Click "Convert" to see the result. The tool will display the converted value, the formula used, and all possible conversions from your original value to every supported unit.
Common Conversions
Quick links to frequently used power conversions. Click any link to see the instant result.
Frequently Asked Questions
What are the different power units?
Watt (W): The SI unit of power, equal to one joule per second. Kilowatt (kW): Equal to 1,000 watts. Megawatt (MW): Equal to 1,000,000 watts. Gigawatt (GW): Equal to 1,000,000,000 watts. Horsepower (hp): Approximately 745.7 watts, commonly used for engines. BTU/hour: British Thermal Unit per hour, commonly used in HVAC.
How precise are the conversions?
Our converter uses high-precision mathematical calculations and displays results with up to 10 decimal places. For most practical applications, 2-4 decimal places are sufficient. You can round the result as needed for your specific use case.
Can I convert negative power values?
Yes! Negative power values are valid in certain contexts, such as when indicating power flowing in the opposite direction. Simply enter a negative number in the input field, and the tool will convert it correctly.
What is the difference between hp and PS?
hp (Horsepower): The imperial unit, equal to approximately 745.7 watts. PS (Pferdestarke): The metric horsepower, equal to approximately 735.5 watts. They differ by about 1.4%. PS is commonly used in Europe for automotive power ratings.
Is this tool free to use?
Absolutely! Our Power Converter is completely free to use, with no registration required. We believe in providing high-quality, accessible tools for students, engineers, and anyone who needs to perform power conversions quickly and accurately.