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Sound Intensity Calculator
Calculate decibel level, sound intensity, and pressure from various sound sources
dB Level
90.00 dB
Sound Pressure (Pa)
0.632 Pa
Intensity (W/m²)
0.0010
Sound Pressure (Pa)
0.632 Pa
Intensity Ratio
10.0×
Perceived Loudness
2.0× louder
Formulas: dB = 10·log₁₀(I/I₀) · I = I₀·10^(dB/10) · p = √(I·ρ·c)
About: Sound intensity level in decibels is calculated as dB = 10·log₁₀(I/I₀), where I is the sound intensity in W/m² and I₀ is the reference intensity (typically 10⁻¹² W/m² for air). A 10 dB increase represents a 10× increase in intensity but is perceived as roughly 2× louder.