Learn · Calculator
Reverberation & panel coverage calculator
Enter a room and see its estimated reverberation time — then how much panel area brings it toward a target. A screening estimate, not an acoustic design.
To reach 0.6s, add roughly 24 m² of panels at αw 0.60.
Indicative only.This uses Sabine's equation (RT60 = 0.161 · V / A) with a single average absorption for the existing room — a screening estimate, not an acoustic design. Real specification uses per-surface, per-frequency measured data (αwto EN ISO 11654 from ISO 354 tests) and, for anything regulated, a qualified acoustician. Enter your panel's own tested αwabove — we don't assume one.
How this works
Reverberation time (RT60) is how long sound takes to decay by 60 decibels once the source stops. This tool uses Sabine's equation, RT60 = 0.161 · V / A, where V is the room volume and A is the total sound absorption — the sum of every surface area multiplied by its absorption coefficient. Adding absorptive panels increases A, which lowers RT60.
It is deliberately simplified: it uses one average absorption for the existing room rather than per-surface, per-frequency data. Use it to sanity-check whether a space needs treatment and roughly how much — then confirm with measured αw and NRC figures and, for anything regulated (a BB93 classroom, say), a qualified acoustician.
The panel absorption is your input — take it from the panel's test report. We publish αw for our own ranges only when a report backs the figure. See the slat wall panels and fire-rated series, or order a sample.