Plan your room's acoustic treatment — without the sales pitch
Free, accurate calculators for treating small rooms: home studios, podcast booths, home theatres and offices. We don't sell panels, so the numbers aren't bent toward buying anything.
Acoustic Panel CalculatorFlagship
How many panels do you actually need? Get a count, coverage target, and a placement diagram for your exact room.
RT60 Reverberation Calculator
Per-octave-band reverberation time (Sabine & Eyring) from your room and surfaces, with target ranges by use-case.
Room Mode Calculator
Find the standing-wave frequencies your room dimensions create, spot problem clusters, and rate your room ratio.
Material Absorption Database
Sourced octave-band absorption coefficients for 60 materials — searchable, with CSV download.
Why another acoustics site?
Most "how many panels do I need?" calculators are run by companies that sell panels, and most reverberation tools are single-purpose pages from the early 2000s. We built one coherent toolkit that uses a single room model, shows its formulas openly on the methodology page, and cites every absorption figure in the material database.