Power Converter
Convert between different units of power Convert between 20 different units instantly with our free online tool.
Formula: 1 W × 0.001 = 0.001 kW
Available Power Units
20 units supported for instant conversion
About Power Conversion
Our free online power converter helps you quickly and accurately convert between 20 different units of power. Whether you're a student, professional, or simply need everyday conversions, you get instant, precise results with the formula displayed.
Convert between different units of power This converter supports both metric and imperial units, making it ideal for international use. All conversions use internationally recognized standards and formulas.
Did You Know?
James Watt defined 1 horsepower as the power a horse exerts lifting 33,000 lb-ft per minute. He deliberately set it slightly above an average horse's output to make his steam engines look better in comparison.
The human body at rest produces about 80–100 W of power — similar to a light bulb. A professional cyclist can sustain 400–450 W for an hour; top sprinters can briefly exceed 2,000 W.
The total power consumption of all Google's data centers worldwide is estimated at about 260 MW — equivalent to about a quarter of a nuclear power plant's output.
Why Use Our Power Converter?
Instant Results
Conversions update as you type — no button clicks needed.
High Precision
Uses internationally standardized conversion factors (SI & NIST).
20+ Units
Convert between 20 power units used around the world.
API & AI Ready
REST API and MCP server let apps and AI assistants convert programmatically.
Common Power Conversion Table
Quick reference: Watt (W) to other common units.
| Watt (W) | Kilowatt (kW) | Megawatt (MW) | Gigawatt (GW) | Milliwatt (mW) |
|---|---|---|---|---|
| 1 | 0.001 | 1.000000e-6 | 1.000000e-9 | 1,000 |
| 2 | 0.002 | 2.000000e-6 | 2.000000e-9 | 2,000 |
| 5 | 0.005 | 5.000000e-6 | 5.000000e-9 | 5,000 |
| 10 | 0.01 | 1.000000e-5 | 1.000000e-8 | 10,000 |
| 25 | 0.025 | 2.500000e-5 | 2.500000e-8 | 25,000 |
| 50 | 0.05 | 5.000000e-5 | 5.000000e-8 | 50,000 |
| 100 | 0.1 | 1.000000e-4 | 1.000000e-7 | 100,000 |
How to Use This Power Converter
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