Online Acoustic Calculators

Free tools for quick acoustic calculations. For comprehensive noise modeling, explore SoundPLAN software.

Decibel Addition Calculator

Add multiple noise sources logarithmically

Source 1:dB(A)

Source 2:dB(A)

Source 3:dB(A)

Formula: L_total = 10 x log10(Sum of 10^(Li/10))

Noise Dose Calculator

Calculate daily noise exposure (ISO 9612 / OSHA)

Noise Level (dB)

Duration (hours)

Criterion Level

Exchange Rate

Distance Attenuation

Calculate sound level at different distances

Source Type

Level at Reference Distance (dB)

Ref Distance (m)

Target Distance (m)

Hearing Protection Calculator

Estimate protected exposure level

HPD Noise Reduction Rating (NRR)

Ambient Noise Level (dB)

Disclaimer: These calculators provide simplified estimates for educational purposes. For professional noise assessments, use SoundPLAN software with proper measurement data.

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