This tool converts from W/m2 (W/m^2) to deciBel (dB).
Enter the value, select the units – e.g. Watt per meter square (SI unit of sound intensity).
The tool will provide the equivalent value in dB.
Formula
IdB = 10*Log10(I/Io)
where
- Io = 1×10-12 W/m2 is the reference power
- I is the power measurement in W/m²
Io is the lowest sound intensity that a person with normal hearing can perceive at a frequency of 1000 Hz
Example Calculation
A sound intensity level of 1pW/m2 = 1×10-12 W/m2 is equivalent to 0 dB
Sound Intensity level of 1 W/m2 is equivalent to 120 dB