Reverberation Time Calculator

Find a room's RT60 reverberation time (Sabine formula).

RT60 1.073

Formula: RT60 = 0.161 × V ÷ A

Step-by-step with your numbers:

1. Values used:

2. Room volume = 200

3. Total absorption = 30 m² sabins

5. RT60 = 1.073

Did we solve your problem today?

Reverberation time (RT60) is how long sound takes to decay by 60 dB in a room.

The math behind it

Sabine's formula: RT60 = 0.161·V ÷ A, with volume in m³ and total absorption in metric sabins.

200 m³ room with 30 sabins → about 1.07 s.

What's a good RT60?

Speech rooms want short times (~0.5 s); concert halls prefer ~2 s.