Microwatt is 0.000001 watt units.
Microwatts to Watts Converter — uW to W
Convert Microwatt (uW) to Watt (W) using the exact conversion factor (1 microwatt = 0.000001 watt). See the formula, worked examples, conversion table, history, and common uses.
Microwatts to Watts converter
Converter
Power Converter
Convert watts, horsepower, refrigeration tons, BTU per hour, and engineering power units.
Context values
Some unit families need one extra value for a physically accurate result.
The watt is one joule per second.
Result = input x 1e-6 / 1.
Power uses the watt as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Microwatts to Watts
Microwatt and Watt both describe power output, and the conversion is a routine part of comparing an engine or motor's spec sheet across countries that use different power units. Specifically: Microwatt is 0.000001 watt units, and the watt is one joule per second.
Formula
watts = microwatts × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 microwatt equals 0.000001 base units, and 1 watt equals 1 base unit, so dividing one by the other gives the direct microwatt-to-watt factor of 0.000001.
Simple example
1 uW × 0.000001 = 0.000001 W
1 microwatt = 0.000001 watts.
Real-world example
100 uW × 0.000001 = 0.0001 W
100 microwatts = 0.0001 watts.
Conversion table
| Microwatt (uW) | Watt (W) |
|---|---|
| 1 uW | 0.000001 W |
| 10 uW | 0.00001 W |
| 100 uW | 0.0001 W |
| 500 uW | 0.0005 W |
| 1,000 uW | 0.001 W |
| 5,000 uW | 0.005 W |
Reverse conversion: Watt to Microwatt
0.000001 W × 1000000 = 1 uW
0.000001 watts = 1 microwatt.
microwatts = watts × 1000000
For a page dedicated to this direction, see Watt to Microwatt.
Understanding the Microwatt (uW)
Microwatt is 0.000001 watt units.
Understanding the Watt
Watt (W) measures power. The watt is the SI derived unit of power: one joule of energy per second. It is classified as a SI derived unit.
Where it's used: Standard scientific and everyday power unit worldwide
Uses of the Watt today
- Electrical appliance power ratings worldwide
- Light bulb brightness-equivalent labeling
- Engine and motor power specifications (alongside horsepower)
History of the Watt
The watt is named after James Watt, whose improvements to the steam engine in the late 18th century were commercially pivotal; ironically, Watt himself used horsepower (a unit he helped popularize) to market his engines. The watt was formally adopted as a unit at the 1889 General Conference on Weights and Measures and became the SI derived unit of power in the 20th century.
Historical origin. Watt was not the invention of a single named person; it developed through the process described above.
Watt — sources
- BIPM SI Brochure — Coherent derived units — Defines the watt as the SI unit of power.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many watts are in 1 microwatt?
1 microwatt equals 0.000001 watts, using the exact defined conversion factor rather than an estimate.
How do I convert microwatt to watt?
Multiply the microwatt value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert watt back to microwatt?
Use the reverse factor: 1 watt equals 1,000,000 microwatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a microwatt?
Microwatt (uW) is a unit of power.
What is a watt?
Watt (W) measures power. The watt is the SI derived unit of power: one joule of energy per second. It is classified as a SI derived unit.
Is the microwatt to watt conversion exact?
Yes. Both microwatt and watt are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 used above is exact to as many digits as you choose to display.