Power Converter
Convert power and energy transfer rates in real time between Watts, Kilowatts, Horsepower, Megawatts, and BTU/hr. View complete equivalents sidebar grid.
Power Converter Workspace
Power Reference Benchmarks
Real-Time Equivalents
Equivalent values in all other supported power units simultaneously:
| Unit | Equivalent Value |
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What Is the Power Converter?
The **Power Converter** is a free browser-based calculator that translates power and energy flow rate values between Watts, Milliwatts, Kilowatts, Megawatts, Gigawatts, mechanical and metric Horsepower, BTU/hr, BTU/min, Calories/sec, Kilocalories/hr, and Refrigeration Tons.
Whether you are calculating mechanical machine performance, electrical transformer capacities, heating and cooling system specifications, or solving physics work rate formulas, this tool renders live equivalents side-by-side as you type.
All calculations run 100% locally on your computer. No inputs are tracked, registered, or transmitted to any server, offering complete security and offline availability.
Key Features
Instant Updates
Conversions compute instantly. Live equivalents list matches inputs without lag or server requests.
Full equivalents table
Compare equivalent values in Watts, Kilowatts, Horsepower, or BTU/h side-by-side with our equivalents list table.
Real-World Benchmarks
Includes reference power scales (LED bulb, human brain, car engine, power plants) converted dynamically.
Private & Secure
No downloads, no logins, and no servers. Works completely offline once loaded in your browser.
How To Use
- 1 Input Power: Enter your starting power value in the main input box. Supports decimals.
- 2 Choose Selectors: Set the starting unit (From) and your target unit (To). Click the Swap icon to toggle them.
- 3 Read Calculation: View your final conversion in the big central display box along with the multiplication ratio.
- 4 Verify Sidebar Table: Inspect all other units in the right column table to get comprehensive equivalents.
Frequently Asked Questions
Mechanical horsepower (hp) is defined as 550 foot-pounds per second, which equals approximately 745.7 Watts. Metric horsepower (ps, Pferdestärke) is defined as the power required to raise 75 kilograms of water by 1 meter in 1 second, which equals approximately 735.5 Watts.
A Ton of Refrigeration (TR) is a unit of power used in air conditioning and refrigeration. It represents the heat extraction rate required to melt 1 short ton (2,000 lbs) of pure ice at 0°C in 24 hours, which is exactly 3,516.85 Watts or 12,000 BTU per hour.
Yes. Once loaded, the tool does not communicate with any external servers. You can disconnect your internet and continue using it with zero features disabled.