Reverberation Time Calculator

Calculate the reverberation time (RT60) of a room using acoustic formulas

Room Volume (m³):

Total Surface Area (m²):

Average Absorption Coefficient (0-1):

Formula:

Concrete: 0.02

Brick: 0.03

Glass: 0.04

Plaster on concrete: 0.06

Wood paneling: 0.10

Carpet on concrete: 0.30

Heavy curtains: 0.50

Acoustic panels: 0.80

Sabine: RT60 = 0.161 × V / A

Eyring: RT60 = 0.161 × V / (-S × ln(1-α))

Where: V = volume, A = total absorption, S = surface area, α = absorption coefficient

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: University Physics

by Young & Freedman

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.