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Sabine Reverberation Time Calculator — result sheet
Estimate room reverberation time from room volume and total equivalent absorption area.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: RT₆₀ = 0.161V/A.
The Sabine estimate divides room volume by equivalent absorption area to approximate the time for a diffuse sound field to decay by 60 dB.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Room volume — m³; minimum 1.0E-6; maximum 1000000000
- Total equivalent absorption area — m² Sabin; minimum 1.0E-6; maximum 1000000000
Worked example
| Input | Value |
|---|---|
| Room volume | 150 |
| Total equivalent absorption area | 25 |
Estimated reverberation time is 0.966 s.
Assumptions and limits
- Room volume is in cubic metres and absorption area is already summed in metric sabins for the frequency of interest.
- The room is approximated as diffuse with relatively low absorption; air absorption, room shape, frequency variation, scattering, and nonuniform source placement are not modeled.
- The result is an early acoustic estimate and does not replace a measured impulse response or design review.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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