← All calculators
Acoustics
Sound Intensity Level
Enter values in the stated units. Example inputs are provided to help you explore the method.
Results
Your results will appear here after calculation. Changing an input clears the previous result.
Method & assumptions
- Convert positive intensity to level: L = 10 log₁₀(I/Iref).
- Default reference: 10⁻¹² W/m². Example: I = 10⁻⁶ W/m² gives 60 dB.
- Negative levels are valid below the reference. Zero intensity corresponds to negative infinity and is excluded.
- This is intensity level, not sound-pressure level, A-weighted level or perceived loudness.