// multi-utility computation suite · offline · instant · precise
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eng.acoustic-room-RT60-Sabine Calculator
Calculates room reverberation time (RT60) using Sabine's formula from room volume and total sound absorption. Sabine formula: RT60 = 0.161 V / A — optimal RT60 for speech intelligibility is 0.4–0.8s; for concert hall music is 1.5–2.5s.
Inputs
V M3
Three-dimensional space occupied (m³ or L). 1 m³ = 1,000 L.
S M2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Alpha Avg
Age in completed years. Many health and fitness formulas adjust for age.
Results
RT60 Sabine (s)
Sample size or count used in the calculation.
RT60 Eyring (s) — better for high absorption
Sample size or count used in the calculation.
total absorption A (m² Sabin)
The combined total across all inputs and components.
RT60 = 0.161V/A
Reference formula or conversion factor shown for context.