Calculate equivalent sound absorption area from surface area and absorption coefficient. This calculator estimates sabins, metric sabins, absorption percentage, and optional RT60 reverberation time using room volume.
Surface area:
Enter the area of the material, wall, ceiling, floor, panel, or room surface being considered.
Absorption coefficient:
Enter how absorptive the surface is, from 0 to 1. A higher coefficient means more sound absorption.
Absorption area:
The calculator multiplies surface area by absorption coefficient to estimate equivalent absorption area.
An absorption area calculator helps estimate how much acoustic absorption a material or room treatment provides. It can be useful for studios, offices, classrooms, restaurants, churches, home theaters, gyms, and meeting rooms.
Absorption area is often used in reverberation time calculations, including Sabine-style RT60 estimates.
The basic equivalent absorption area formula is:
A = S × α
Absorption area is the equivalent amount of perfectly absorptive surface represented by a material or room surface. It is commonly measured in sabins or metric sabins.
Multiply the surface area by the absorption coefficient. For example, 100 square feet with a 0.50 coefficient equals 50 sabins.
An absorption coefficient is a value from 0 to 1 that describes how much sound a material absorbs. A value near 0 is reflective, while a value near 1 is highly absorptive.
Yes. More absorption area generally lowers reverberation time, making a room sound less echoey and more controlled.