Picowatt per square meter (pW/m²)
One trillionth of a watt per square meter. The reference sound intensity is 1 pW/m².
What is a picowatt per square meter?
- Symbol
- pW/m²
- Quantity
- Sound Intensity Level (dB IL)
- Unit system
- SI
- Definition
- One trillionth of a watt per square meter. The reference sound intensity is 1 pW/m².
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
The reference intensity of acoustics: 1 pW/m² is 0 dB IL, close to the threshold of hearing at 1 kHz.
Picowatt per square meter in other sound intensity level (db il) units
- 1 pW/m² = 1e-12 W/m²Watt per square meter
- 1 pW/m² = 0.000001 µW/m²Microwatt per square meter
- dB IL = 10 × log₁₀(pW/m²)Picowatt per square meter to Decibel IL (re 1 pW/m²) converter
Picowatt per square meter quick reference
| Picowatt per square meter | Decibel IL (re 1 pW/m²) | Watt per square meter | Microwatt per square meter |
|---|---|---|---|
| 1 pW/m² | = 0 dB IL | = 1e-12 W/m² | = 0.000001 µW/m² |
| 10 pW/m² | = 10 dB IL | = 1e-11 W/m² | = 0.00001 µW/m² |
| 1000 pW/m² | = 30 dB IL | = 1e-9 W/m² | = 0.001 µW/m² |
| 1e6 pW/m² | = 60 dB IL | = 0.000001 W/m² | = 1 µW/m² |
| 1e9 pW/m² | = 90 dB IL | = 0.001 W/m² | = 1000 µW/m² |
| 1e12 pW/m² | = 120 dB IL | = 1 W/m² | = 1000000 µW/m² |
Where the picowatt per square meter fits
The next larger sound intensity level (db il) unit is the microwatt per square meter (µW/m²). 1 pW/m² = 0.000001 µW/m², and 1 µW/m² = 1000000 pW/m².