Microwatt per square meter (µW/m²)
One millionth of a watt per square meter.
What is a microwatt per square meter?
- Symbol
- µW/m²
- Quantity
- Sound Intensity Level (dB IL)
- Unit system
- SI
- Definition
- One millionth of a watt per square meter.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used for weak sound and radio intensities. 1 µW/m² is 60 dB IL.
Microwatt per square meter in other sound intensity level (db il) units
- 1 µW/m² = 0.000001 W/m²Watt per square meter
- 1 µW/m² = 1000000 pW/m²Picowatt per square meter
- dB IL = 10 × log₁₀(µW/m² ÷ 0.000001)Decibel IL (re 1 pW/m²)
Microwatt per square meter quick reference
| Microwatt per square meter | Watt per square meter | Decibel IL (re 1 pW/m²) | Picowatt per square meter |
|---|---|---|---|
| 1 µW/m² | = 0.000001 W/m² | = 60 dB IL | = 1000000 pW/m² |
| 10 µW/m² | = 0.00001 W/m² | = 70 dB IL | = 10000000 pW/m² |
| 1000 µW/m² | = 0.001 W/m² | = 90 dB IL | = 1000000000 pW/m² |
| 1e6 µW/m² | = 1 W/m² | = 120 dB IL | = 1000000000000 pW/m² |
| 1e9 µW/m² | = 1000 W/m² | = 150 dB IL | = 1e+15 pW/m² |
Where the microwatt per square meter fits
The next smaller sound intensity level (db il) unit is the picowatt per square meter (pW/m²). 1 µW/m² = 1000000 pW/m², and 1 pW/m² = 0.000001 µW/m².
The next larger sound intensity level (db il) unit is the watt per square meter (W/m²). 1 µW/m² = 0.000001 W/m², and 1 W/m² = 1000000 µW/m².