Power Converter

Microwatts to Milliwatts Converter

Convert any microwatt value to milliwatts in real time. 1,000 μW = 1 mW. This dedicated power converter covers RF signal levels, optical power, and low-power electronics.

μW
×1,000
mW
1,000 μW = 1 mW

How the Microwatt to Milliwatt Converter Works

The microwatt to milliwatt converter divides any microwatt (μW) input by 1,000 to produce the milliwatt (mW) output. A microwatt is 10⁻⁶ watts and a milliwatt is 10⁻³ watts. Since micro is 1,000 times smaller than milli, you divide by 1,000 to go from μW to mW.

Microwatt measurements appear in RF receiver sensitivity (e.g., -50 dBm ≈ 10 μW), optical fiber power levels, energy harvesting from vibration or light, and standby power consumption of ultra-low-power microcontrollers.

Enter a microwatt value and the milliwatt equivalent appears instantly. The converter works in both directions.

Microwatt to Milliwatt Formula

mW = μW ÷ 1,000

The formula is: mW = μW ÷ 1,000. Equivalently, mW = μW × 0.001. Since micro (10⁻⁶) is 1,000 times smaller than milli (10⁻³), dividing by 1,000 scales up from micro to milli.

Example: 500 μW = 500 ÷ 1,000 = 0.5 mW. 10,000 μW = 10,000 ÷ 1,000 = 10 mW. 1 μW = 0.001 mW.

Microwatt to Milliwatt Conversion Chart

Microwatts Milliwatts Example Real-World Use

The μW to mW chart below covers 12 common power values used in RF engineering, optical communications, and energy harvesting.

Frequently Asked Questions

How many microwatts are in 1 milliwatt?

There are exactly 1,000 microwatts (μW) in 1 milliwatt (mW). To convert μW to mW, divide by 1,000. To convert mW to μW, multiply by 1,000.

What is 0 dBm in microwatts?

0 dBm equals exactly 1 milliwatt (mW), which is 1,000 microwatts (μW). The dBm scale uses 1 mW as its reference point: P(dBm) = 10 × log₁₀(P/1 mW).

Why use microwatts instead of milliwatts?

Microwatts are used when power levels are below 1 milliwatt, which is common in RF receiver sensitivity, optical fiber measurements, and ultra-low-power electronics. Using μW avoids fractional milliwatt values.

How do I convert milliwatts to microwatts?

Multiply by 1,000. For example, 0.5 mW × 1,000 = 500 μW. This converter supports both directions.

What power level can energy harvesters produce?

Typical energy harvesters produce 10–500 μW (0.01–0.5 mW) from sources like indoor light, vibration, or thermoelectric gradients. This is enough to power low-duty-cycle IoT sensors but not continuous-operation devices.