Sound Level Calculator
Convert between decibels (dB) and sound intensity (W/m²)
How to use: Enter either a dB value or intensity value. The calculator will convert to the other unit automatically. Reference intensity is 10⁻¹² W/m² (threshold of hearing).
Decibels (dB)
Sound level in decibels
Range: -100 to 200 dB
Intensity (W/m²)
Sound intensity in watts per square meter
Use scientific notation (e.g., 1e-6)
Formulas
L = 10 × log₁₀(I / I₀)
where L = sound level (dB), I = intensity (W/m²), I₀ = reference intensity (10⁻¹² W/m²)
I = I₀ × 10^(L/10)
Inverse formula to calculate intensity from dB