Reverb Room RT60

Instant RT60 calculations for any room. Enter dimensions, pick a surface, get your reverberation time.

Reverb estimates the reverberation time (RT60) of any room using the Sabine formula — the industry-standard acoustic calculation used by architects, sound engineers, and home studio builders.

Enter the room's length, width, and height in meters, choose the dominant surface material from a catalog of 15 types, and Reverb instantly computes how long sound will decay in that space.

Material catalog covers: carpet, hardwood, concrete, brick, glass, drywall, acoustic foam, fabric curtain, tile, plaster, wood paneling, cork, mineral wool, cinder block, and marble — each with its measured absorption coefficient for accurate mid-band estimates.

Save any room as a named preset and compare different materials side-by-side to understand how surface treatment changes the acoustic character of a space.

RT60 guide built in:

• Under 0.3 s: Very dry — anechoic chamber or recording booth
• 0.3–0.6 s: Dry — home studio or listening room
• 0.6–1.2 s: Balanced — living room or classroom
• 1.2–2.0 s: Lively — conference hall or theater
• Over 2.0 s: Very reverberant — large hall or cathedral

Everything runs offline. No account required, no ads, no tracking.