Microwatt is 0.000001 watt units.
Microwatts to Milliwatts Converter — uW to mW
Convert Microwatt (uW) to Milliwatt (mW) using the exact conversion factor (1 microwatt = 0.001 milliwatt). See the formula, worked examples, and conversion table.
Microwatts to Milliwatts converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Milliwatt is 0.001 watt units.
Result = input x 1e-6 / 0.001.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Microwatts to Milliwatts
Microwatt and Milliwatt both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Microwatt is 0.000001 watt units, and milliwatt is 0.001 watt units.
Formula
milliwatts = microwatts × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 microwatt equals 0.000001 base units, and 1 milliwatt equals 0.001 base units, so dividing one by the other gives the direct microwatt-to-milliwatt factor of 0.001.
Simple example
1 uW × 0.001 = 0.001 mW
1 microwatt = 0.001 milliwatts.
Real-world example
120 uW × 0.001 = 0.12 mW
120 microwatts = 0.12 milliwatts.
Conversion table
| Microwatt (uW) | Milliwatt (mW) |
|---|---|
| 1 uW | 0.001 mW |
| 5 uW | 0.005 mW |
| 12 uW | 0.012 mW |
| 24 uW | 0.024 mW |
| 120 uW | 0.12 mW |
| 240 uW | 0.24 mW |
Reverse conversion: Milliwatt to Microwatt
0.001 mW × 1000 = 1 uW
0.001 milliwatts = 1 microwatt.
microwatts = milliwatts × 1000
For a page dedicated to this direction, see Milliwatt to Microwatt.
Understanding the Microwatt (uW)
Microwatt is 0.000001 watt units.
Understanding the Milliwatt (mW)
Milliwatt is 0.001 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many milliwatts are in 1 microwatt?
1 microwatt equals 0.001 milliwatts, using the exact defined conversion factor rather than an estimate.
How do I convert microwatt to milliwatt?
Multiply the microwatt value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert milliwatt back to microwatt?
Use the reverse factor: 1 milliwatt equals 1,000 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 electricity.
What is a milliwatt?
Milliwatt (mW) is a unit of electricity.
Is the microwatt to milliwatt conversion exact?
Yes. Both microwatt and milliwatt are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.