The Power Converter allows you to convert between various power units quickly and accurately, making it ideal for engineering and energy analysis tasks.
- Free
- No signup
- Fast
- Privacy-friendly
Back to Category
Power Converter
Unit Converter
Convert power units instantly.
Mode
Batch mode converts multiple values (paste one number per line).
Value
Values (batch mode)
From
To
Precision (decimal places)
Free · API · MCPToolYour platform
Use Power Converter three ways
The free Power Converter on this page works in your browser. The same workflow is available via REST API for apps and via MCP for Cursor, Claude, and other agents — one API key, one plan, one quota. This tool is part of the unit-conversions module under Business Tools.
- Free in browserUse Power Converter here — no account required.
- REST APICall from your server with
X-Api-Key. - MCP for agentsConnect Cursor or Claude to ToolYour MCP with the same key.
- 1. Get an API keySign in and open Dashboard → API Keys (works for REST and MCP).
- 2. Call or connectUse the REST API from your server, or paste the MCP URL into your agent config.
- 3. Same qualityOutput matches the free web tool across all three surfaces.
What is Power Converter?
Use the Power Converter to easily convert power units like watts, kilowatts, and horsepower. Perfect for electrical and mechanical engineering calculations, this tool provides instant results in your browser without the need for software installation. Simply enter your power value, select the units, and get accurate conversions. Try it with a small sample today!
What are common questions about Power Converter?
What power units are supported by this converter?
Our tool supports a wide range of power units, including Watts (W), Kilowatts (kW), Megawatts (MW), Gigawatts (GW), milliWatts (mW), microWatts (µW), Horsepower (HP), Metric Horsepower (PS), Foot-Pounds per Minute (ft-lb/min), and BTU per Hour (BTU/hr).
Is the Power Converter tool completely free?
Yes, our Power Converter is 100% free to use online. There are no costs, subscriptions, or limitations on the number of power conversions you can perform.
How accurate is the Power Converter for engineering and energy calculations?
Our online Power Converter uses precise, standard mathematical conversion factors, ensuring high accuracy suitable for engineering calculations, energy analysis, technical applications, and comparing specifications.
What is BTU per hour (BTU/hr) and where is it used?
BTU per Hour (BTU/hr) is a unit of power commonly used in heating, ventilation, and air conditioning (HVAC) systems, as well as for rating water heaters and grills, particularly in the United States. It measures the rate of energy transfer as heat.
How do I convert watts to kilowatts?
To convert Watts (W) to Kilowatts (kW), select 'Watts' as your 'Convert From' unit and 'Kilowatts' as your 'Convert To' unit. Enter the value in Watts, and the converter will instantly show you the equivalent in Kilowatts. (1 Kilowatt = 1000 Watts).
Can I convert between kilowatts (kW) and horsepower (HP)?
Yes, this is a very common conversion for comparing engine power or motor ratings. Select 'Kilowatts' as the input and 'Horsepower' as the output (or vice versa), enter the value, and get the conversion. Our tool includes both standard mechanical HP and metric horsepower (PS).
What are the key features of Power Converter?
Supports Electrical, Mechanical & Thermal Power Units
Convert between a comprehensive range of power units including Watts (W), Kilowatts (kW), Megawatts (MW), Horsepower (HP - mechanical and electrical), Metric Horsepower (PS), Foot-Pounds per Minute (ft-lb/min), BTU per Hour (BTU/hr), and more. Covers units used across different engineering and technical fields.
Precise Results for Engineering, Energy, & Automotive
Whether you're working on energy consumption calculations, comparing engine power (kW vs HP), designing electrical systems, or evaluating HVAC performance (BTU/hr), rely on our tool for high-precision power conversions.
Easy-to-Use Power Converter
Convert power units quickly and effortlessly with a clean, intuitive interface. Our tool is designed for speed and simplicity, accessible on any device.
Get Instant, Accurate Power Conversions
Receive precise power conversion results in real-time as you enter values. Our converter uses standard, accurate factors for reliable measurements every time.
How do you use Power Converter?
Select Your Power Units
Choose the power unit you want to convert from and to. For example, select Watts to Kilowatts, Horsepower to Watts, or BTU/hr to Kilowatts.
Enter the Power Value
Input the power measurement value that you need to convert into the designated field. The tool will instantly calculate the conversion.
Get Your Accurate Conversion Results
See the precise converted power displayed immediately for the target unit you selected. Fast, accurate, and reliable power unit conversion.
Why Accurate Power Conversion is Important
Accurate power conversion is critical for comparing specifications of devices or systems (e.g., choosing between two motors rated in kW vs HP), calculating energy efficiency, designing electrical or mechanical systems, and understanding energy bills (often based on kilowatt-hours, a unit of energy, which relates directly to power). Using a reliable converter ensures precise calculations and informed decisions.
Different Types of Power and Their Units
Power can manifest in various forms, including electrical power (rate of electrical energy flow), mechanical power (rate of doing work), thermal power (rate of heat transfer), etc. While the Watt is the universal SI unit for all forms of power, specific units are common in different fields. For example, electrical power is often in Watts (W), Kilowatts (kW). Mechanical power uses Horsepower (HP) or foot-pounds per minute (ft-lb/min). Thermal power might use BTU per hour (BTU/hr) or calories per second.
Converting Between Electrical, Mechanical, and Thermal Units
Our Power Converter allows conversion not just within electrical units (W to kW) or mechanical units (HP to ft-lb/min), but also between different types of power (e.g., Watts to Horsepower, Kilowatts to BTU/hr). These conversions are based on fixed relationships established by definitions of the units, enabling you to work seamlessly across different engineering disciplines or compare diverse systems.
Power vs. Energy: Understanding the Difference
It's important not to confuse power with energy. Power is the rate at which energy is used or transferred (Energy per unit time). Energy is the total amount of work done or heat transferred (often measured in Joules, Watt-hours, kilowatt-hours, calories). Think of power as the speed of using energy. Our tool focuses on converting the rate (Power), not the total amount (Energy), although these concepts are closely related.
Common Power Units and Where They Are Used
Watts (W) are used for small electrical devices (light bulbs). Kilowatts (kW) are used for larger appliances and rating electrical power consumption or generation. Megawatts (MW) and Gigawatts (GW) are for power plants or large industrial facilities. Horsepower (HP) is commonly used for rating engines and motors (cars, pumps). Metric Horsepower (PS) is a similar unit used in some countries. BTU/hr is prevalent in HVAC systems.
What is Power?
Power is the rate at which work is done or energy is transferred or converted. In simpler terms, it measures how quickly energy is used or produced. The standard SI unit for power is the Watt (W). Understanding power and being able to convert between different power units is essential across various scientific, engineering, and everyday applications.
Where do you browse more business tools tools?
- Business Tools tools
Browse the full Business Tools category on ToolYour.
- AI Tools tools
PII scrub, resume match, transcription, video summarize, and YouTube analysis. Free in the browser; API-backed
- File Converter tools
Convert PDF, Word, images, video, audio, and archives. Free in the browser; API-backed converters via REST and
Related tools
business tools
Break-even Calculator
Break-even Calculator estimates units or revenue needed to cover fixed and variable costs. Enter costs and price, then review the break-even point on ToolYour.
Freebusiness tools
Apparent Power Converter
Convert between various apparent power units quickly and accurately with our tool. Ideal for electrical engineering and physics applications.
Freebusiness tools
Reactive Power Converter
The Reactive Power Converter allows you to quickly convert between various reactive power units, including VAR, kVAR, MVAR, and GVAR. It's designed for electrical engineers and physics applications.
Freebusiness tools
Reactive Energy Converter
Convert between various reactive energy units quickly and accurately with this tool. Ideal for electrical engineering and power system analysis.
Freebusiness tools
Payment Due Date Calculator
Calculate invoice due dates accurately with our free Payment Due Date Calculator. Determine when payments are due based on the invoice date and specified payment terms.
Freebusiness tools
Timesheet Invoice Calculator
The Timesheet Invoice Calculator convert your work hours into precise invoices effortlessly. Input your total hours worked and your hourly rate to generate accurate invoices instantly.
Freebusiness tools
Currency Converter
Convert amounts between any two currencies instantly with our Currency Converter. It uses live exchange rates for accurate results.
Freebusiness tools
Electric Current Converter
Easily convert between various electric current units with our Electric Current Converter. It supports units like amperes, milliamperes, and microamperes.
Freebusiness tools
Energy Converter
The Energy Converter allows you to quickly convert between various energy units like joules, kilowatt-hours, and calories. It's designed for anyone needing accurate energy calculations.
Freebusiness tools
Credit Note Calculator
The Credit Note Calculator helps businesses and freelancers calculate credit note values quickly and accurately. It simplifies the process of issuing refunds or adjusting invoices.
Freebusiness tools
Invoice Total Calculator
Calculate your invoice totals quickly and accurately with our Invoice Total Calculator. Sum up items, apply taxes, and include discounts effortlessly.
Freebusiness tools
Recurring Invoice Calculator
Calculate total charges for your subscription billing with our Recurring Invoice Calculator. It's designed for businesses and freelancers managing ongoing services.
Free
Popular in Business Tools
business tools
Payment Due Date Calculator
Calculate invoice due dates accurately with our free Payment Due Date Calculator. Determine when payments are due based on the invoice date and specified payment terms.
Freebusiness tools
Break-even Calculator
Break-even Calculator estimates units or revenue needed to cover fixed and variable costs. Enter costs and price, then review the break-even point on ToolYour.
Freebusiness tools
Timesheet Invoice Calculator
The Timesheet Invoice Calculator convert your work hours into precise invoices effortlessly. Input your total hours worked and your hourly rate to generate accurate invoices instantly.
Freebusiness tools
Currency Converter
Convert amounts between any two currencies instantly with our Currency Converter. It uses live exchange rates for accurate results.
Freebusiness tools
Credit Note Calculator
The Credit Note Calculator helps businesses and freelancers calculate credit note values quickly and accurately. It simplifies the process of issuing refunds or adjusting invoices.
Freebusiness tools
Electric Current Converter
Easily convert between various electric current units with our Electric Current Converter. It supports units like amperes, milliamperes, and microamperes.
Freebusiness tools
Energy Converter
The Energy Converter allows you to quickly convert between various energy units like joules, kilowatt-hours, and calories. It's designed for anyone needing accurate energy calculations.
Freebusiness tools
Invoice Total Calculator
Calculate your invoice totals quickly and accurately with our Invoice Total Calculator. Sum up items, apply taxes, and include discounts effortlessly.
Free