Convert Microwatts (µW) to Watts (W)
1 microwatt equals 1 × 10⁻⁶ watts.
Microwatt to Watt Converter
What Is a Microwatt?
The microwatt (µW) is an SI unit of power equal to one millionth of a watt (10⁻⁶ W or 0.000001 W). It is used for very low-power measurements: received RF signal strength, sensor power consumption, energy harvesting output, and biomedical device power.
What Is a Watt?
The watt (W) is the SI base unit of power equal to one joule per second. Named after James Watt, it is used for all power measurements from milliwatt electronics to gigawatt power plants.
Microwatts to Watts Formula
The conversion is exact by SI definition:
watts = microwatts ÷ 1,000,000
The "micro-" prefix means one millionth (10⁻⁶). Move the decimal 6 places left.
Worked Example
Convert 100 µW (WiFi received signal power at moderate range) to watts:
- Divide: 100 ÷ 1,000,000 = 0.0001 W (= 0.1 mW = −10 dBm)
Common Microwatts to Watts Conversions
| Microwatts | Watts | dBm | Context |
|---|---|---|---|
| 0.001 µW | 10⁻⁹ W | −60 dBm | Very weak WiFi at edge of range |
| 0.01 µW | 10⁻⁸ W | −50 dBm | Weak cellular signal |
| 0.1 µW | 10⁻⁷ W | −40 dBm | Good WiFi signal strength |
| 1 µW | 0.000001 W | −30 dBm | Strong WiFi / near access point |
| 10 µW | 0.00001 W | −20 dBm | Bluetooth received signal |
| 100 µW | 0.0001 W | −10 dBm | Strong Bluetooth / BLE |
| 1,000 µW | 0.001 W | 0 dBm | 1 milliwatt (dBm reference) |
| 10,000 µW | 0.01 W | 10 dBm | WiFi client transmit power |
| 100,000 µW | 0.1 W | 20 dBm | Bluetooth Class 1 max |
| 1,000,000 µW | 1 W | 30 dBm | 1 watt — FRS radio max |
Microwatts and dBm
In RF engineering, power is commonly expressed in dBm (decibels relative to 1 milliwatt). Since 1 mW = 1,000 µW: 0 dBm = 1,000 µW, −30 dBm = 1 µW, −60 dBm = 0.001 µW. Every 10 dBm decrease divides the power by 10. Every 3 dBm decrease halves it.
When You Need This Conversion
- WiFi troubleshooting: Signal strength tools report in dBm or µW. −40 dBm = 0.1 µW = 0.0000001 W. Good signal is above −50 dBm (0.01 µW).
- IoT power budgets: Low-power sensors consume 1-100 µW in sleep mode. A 10 µW sensor on a 1,000 mWh battery lasts 100,000 hours (11.4 years) in sleep.
- Energy harvesting: Ambient RF, thermal, or vibration energy harvesters produce 1-100 µW — enough to power IoT sensors but not traditional electronics.
Frequently Asked Questions
How many microwatts in a watt?
1,000,000 microwatts (one million). The micro- prefix means 10⁻⁶.
How many microwatts in a milliwatt?
1,000 microwatts. The prefix chain: 1 W = 1,000 mW = 1,000,000 µW.
What is 1 microwatt in dBm?
−30 dBm. Since 0 dBm = 1 mW = 1,000 µW, and 1 µW is 1/1,000 of that: 10 × log₁₀(0.001) = −30 dBm.
How do I convert watts to microwatts?
Multiply by 1,000,000. Example: 0.005 W = 5,000 µW = 5 mW.
Common Microwatt to Watt Conversions
| Microwatt | Watt | Actions |
|---|---|---|
| 1 microwatt | 1 × 10-6 watts | |
| 5 microwatts | 5 × 10-6 watts | |
| 10 microwatts | 1 × 10-5 watts | |
| 25 microwatts | 2.5 × 10-5 watts |
| Microwatt | Watt | Actions |
|---|---|---|
| 50 microwatts | 5 × 10-5 watts | |
| 100 microwatts | 0.0001 watts | |
| 500 microwatts | 0.0005 watts | |
| 1000 microwatts | 0.001 watts |
Microwatts to watts Conversion Table
Reference table with common microwatts to watts conversions. All values calculated with high precision.
Microwatts to Watts Table
100 to 500000
Microwatts to Watts Table
1000000 to 1 × 1011
Watts to Microwatts Table
0.0001 to 12
Watts to Microwatts Table
1 to 100000
Looking for the reverse? Convert Watt to Microwatt
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- Joules to kWh — Energy = power × time (kWh = kW × hours)
