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Room Acoustics Calculator

Calculate the reverberation time (RT60) of any room using the Sabine equation. Optimize acoustic comfort for any space type.

Room Length8 m
2 m30 m
Room Width6 m
2 m20 m
Room Height3 m
2.4 m8 m
Floor Material
Wall Material
Ceiling Material
Reverberation Time (RT60)0.47sControlled — ideal for classrooms & offices
Room Volume144.0 m³
Total Surface Area180.0 m²
Total Absorption49.68 sabins

Ideal RT60 Ranges by Space Type

Your room's RT60 of 0.47s is shown as the amber line. Compare it against recommended ranges.

Recording Studio
0.2–0.4s
Classroom
0.6–0.8s
Office / Conference
0.5–0.7s
Lecture Hall
0.8–1.2s
Concert Hall
1.5–2.5s
Worship Space
2–4s

How RT60 Is Calculated

RT60 is calculated using the Sabine equation:

RT60 = 0.161 × V / A
  • V = Room volume in cubic meters (L × W × H)
  • A = Total absorption = Σ(αᵢ × Sᵢ)
  • αᵢ = Absorption coefficient of each surface material
  • Sᵢ = Surface area of that material (m²)
  • 0.161 = Constant derived from the speed of sound