How to use the room reverberation time calculator
Estimate how long sound takes to decay by 60 dB in a room using Sabine formula. Enter room volume, total absorption in the fields above; the reverberation time (rt60) is computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “reverberation time”, “echo in room”, “Sabine RT60”, “calculate room reverberation time”, “find reverberation time”.
Formula
Variables
- V — Room volume (m³)
- A — Total absorption (m²)
Worked example
With room volume = 200 m³, total absorption = 20 m², the calculator gives reverberation time (rt60) ≈ 1.61 s.
Frequently asked questions
What is the room reverberation time calculator used for?
Estimate how long sound takes to decay by 60 dB in a room using Sabine formula. It helps with questions such as “reverberation time”, “echo in room”, “Sabine RT60”.
What is the formula for the room reverberation time calculation?
Reverberation time (RT60) (s) = 0.161 × V / A. Here V is room volume (m³), A is total absorption (m²).
What inputs do I need for the room reverberation time calculator?
You need room volume in m³, total absorption in m². Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the room reverberation time calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the room reverberation time result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.