Microwatt is 0.000001 watt units.
Microwatts to Kilowatts Converter — uW to kW
Convert Microwatt (uW) to Kilowatt (kW) using the exact conversion factor (1 microwatt = 1e-9 kilowatt). See the formula, worked examples, conversion table, history, and common uses.
Microwatts to Kilowatts 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.
Kilowatt is 1000 watt units.
Result = input x 1e-6 / 1000.
Power uses the watt as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Microwatts to Kilowatts
Microwatt and Kilowatt 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 kilowatt is 1000 watt units.
Formula
kilowatts = microwatts × 1e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 microwatt equals 0.000001 base units, and 1 kilowatt equals 1000 base units, so dividing one by the other gives the direct microwatt-to-kilowatt factor of 1e-9.
Simple example
1 uW × 1e-9 = 1e-9 kW
1 microwatt = 1e-9 kilowatts.
Real-world example
100 uW × 1e-9 = 1e-7 kW
100 microwatts = 1e-7 kilowatts.
Conversion table
| Microwatt (uW) | Kilowatt (kW) |
|---|---|
| 1 uW | 1e-9 kW |
| 10 uW | 1e-8 kW |
| 100 uW | 1e-7 kW |
| 500 uW | 5e-7 kW |
| 1,000 uW | 0.000001 kW |
| 5,000 uW | 0.000005 kW |
Reverse conversion: Kilowatt to Microwatt
1e-9 kW × 1000000000 = 1 uW
1e-9 kilowatts = 1 microwatts.
microwatts = kilowatts × 1000000000
For a page dedicated to this direction, see Kilowatt to Microwatt.
Understanding the Microwatt (uW)
Microwatt is 0.000001 watt units.
Understanding the Kilowatt
Kilowatt (kW) measures power. A kilowatt is 1,000 watts. It is classified as a SI derived (metric prefix) unit.
Where it's used: Standard power unit worldwide for larger appliances, vehicles, and electrical systems
Uses of the Kilowatt today
- Electric vehicle motor power ratings (alongside horsepower)
- Household electrical system and generator capacity
- Industrial motor and equipment power ratings
History of the Kilowatt
The kilowatt follows directly from the watt via the standard SI 'kilo-' prefix, becoming especially prominent with the growth of electrical power generation and distribution in the late 19th and 20th centuries.
Historical origin. Kilowatt was not the invention of a single named person; it developed through the process described above.
Kilowatt — sources
- BIPM SI Brochure — SI prefixes — Defines 'kilo-' as the prefix for 10³.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilowatts are in 1 microwatt?
1 microwatt equals 1e-9 kilowatts, using the exact defined conversion factor rather than an estimate.
How do I convert microwatt to kilowatt?
Multiply the microwatt value by 1e-9. The converter above does this instantly to whatever precision you set.
How do I convert kilowatt back to microwatt?
Use the reverse factor: 1 kilowatt equals 1,000,000,000 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 kilowatt?
Kilowatt (kW) measures power. A kilowatt is 1,000 watts. It is classified as a SI derived (metric prefix) unit.
Is the microwatt to kilowatt conversion exact?
Yes. Both microwatt and kilowatt are defined by fixed standards rather than physical artifacts, so the factor of 1e-9 used above is exact to as many digits as you choose to display.