Milliwatt is 0.001 watt units.
Milliwatts to Microwatts Converter — mW to uW
Convert Milliwatt (mW) to Microwatt (uW) using the exact conversion factor (1 milliwatt = 1,000 microwatt). See the formula, worked examples, and conversion table.
Milliwatts to Microwatts 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.
Microwatt is 0.000001 watt units.
Result = input x 0.001 / 1e-6.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Milliwatts to Microwatts
Milliwatt and Microwatt 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: Milliwatt is 0.001 watt units, and microwatt is 0.000001 watt units.
Formula
microwatts = milliwatts × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 milliwatt equals 0.001 base units, and 1 microwatt equals 0.000001 base units, so dividing one by the other gives the direct milliwatt-to-microwatt factor of 1000.
Simple example
1 mW × 1000 = 1,000 uW
1 milliwatt = 1,000 microwatts.
Real-world example
120 mW × 1000 = 120,000 uW
120 milliwatts = 120,000 microwatts.
Conversion table
| Milliwatt (mW) | Microwatt (uW) |
|---|---|
| 1 mW | 1,000 uW |
| 5 mW | 5,000 uW |
| 12 mW | 12,000 uW |
| 24 mW | 24,000 uW |
| 120 mW | 120,000 uW |
| 240 mW | 240,000 uW |
Reverse conversion: Microwatt to Milliwatt
1 uW × 0.001 = 0.001 mW
1 microwatt = 0.001 milliwatts.
milliwatts = microwatts × 0.001
For a page dedicated to this direction, see Microwatt to Milliwatt.
Understanding the Milliwatt (mW)
Milliwatt is 0.001 watt units.
Understanding the Microwatt (uW)
Microwatt is 0.000001 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many microwatts are in 1 milliwatt?
1 milliwatt equals 1,000 microwatts, using the exact defined conversion factor rather than an estimate.
How do I convert milliwatt to microwatt?
Multiply the milliwatt value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert microwatt back to milliwatt?
Use the reverse factor: 1 microwatt equals 0.001 milliwatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a milliwatt?
Milliwatt (mW) is a unit of electricity.
What is a microwatt?
Microwatt (uW) is a unit of electricity.
Is the milliwatt to microwatt conversion exact?
Yes. Both milliwatt and microwatt are defined by fixed standards rather than physical artifacts, so the factor of 1000 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.