Watt per square meter to Decibel IL (re 1 pW/m²) Converter
1e-12 W/m² is 0 dB IL. Convert watts per square meter (W/m²) to decibels IL (dB IL) below: type a value and the result updates as you type.
W/m² to dB IL calculator
Result
Watt per square meter to Decibel IL (re 1 pW/m²) conversion
1 W/m² = 120 dB ILone watt per square meter in decibels IL
1 dB IL ≈ 1.258925412e-12 W/m²one decibel IL in watts per square meter
Watt per square meter (W/m²): SI unit of heat flux density and irradiance. Full sunlight at ground level is roughly 1000 W/m².
Decibel IL (re 1 pW/m²) (dB IL): Sound intensity level: 10 times the base-10 logarithm of the sound intensity divided by the reference intensity of 1 pW/m² (10⁻¹² W/m²).
Source:Watt per square meter: SI Brochure, 9th edition (BIPM, 2019); Decibel IL (re 1 pW/m²): ISO 1683:2015, Acoustics: Preferred reference values for acoustical and vibratory levels
How to convert watts per square meter to decibels IL
To convert watts per square meter to decibels IL, divide the amount by 1e-12, take the base-10 logarithm, then multiply by 10.
Formula
dB IL = 10 × log₁₀(W/m² ÷ 1e-12)
Examples
- 1e-12 W/m² = 10 × log₁₀(1e-12 ÷ 1e-12) = 0 dB IL
- 0.001 W/m² = 10 × log₁₀(0.001 ÷ 1e-12) = 90 dB IL
- 1 W/m² = 10 × log₁₀(1 ÷ 1e-12) = 120 dB IL
Watt per square meter to Decibel IL (re 1 pW/m²) conversion table
| Watt per square meter (W/m²) | Decibel IL (re 1 pW/m²) (dB IL) |
|---|---|
| 1e-12 W/m² | 0 dB IL |
| 1e-9 W/m² | 30 dB IL |
| 1e-6 W/m² | 60 dB IL |
| 1e-3 W/m² | 90 dB IL |
| 0.01 W/m² | 100 dB IL |
| 0.1 W/m² | 110 dB IL |
| 1 W/m² | 120 dB IL |
| 10 W/m² | 130 dB IL |
| 100 W/m² | 140 dB IL |
Values rounded to 10 significant digits where needed.
Frequently asked questions
- What is 1e-12 W/m² in dB IL?
- 1e-12 W/m² is 0 dB IL. To convert watts per square meter to decibels IL, divide the amount by 1e-12, take the base-10 logarithm, then multiply by 10.
- How do I convert decibels IL to watts per square meter?
- To convert decibels IL to watts per square meter, divide the level by 10, raise 10 to that power, then multiply by 1e-12. The formula is W/m² = 1e-12 × 10^(dB IL ÷ 10).
- Is this conversion exact?
- Yes. Both units have exact definitions and the factor 1e-12 is exact. Displayed results are only rounded when they have many decimal places.