Estimate reverberation time using the Sabine formula. Enter room volume and absorption area, or use surface area with an average absorption coefficient, to calculate RT60 and room sound character.
Room volume:
The room volume is the amount of space inside the room. Larger rooms usually have longer reverberation times.
Absorption area:
Absorption area represents how much sound absorption the room has. More absorption lowers RT60.
RT60 result:
The calculator divides room volume by absorption area and multiplies by the Sabine constant for the selected unit system.
A Sabine formula calculator helps estimate reverberation time for acoustic planning. It can be useful for studios, offices, classrooms, churches, home theaters, meeting rooms, restaurants, gyms, and music spaces.
This is a simplified room-acoustics estimate. Actual room behavior can vary by frequency, material placement, furniture, people, air absorption, openings, and measurement method.
The Sabine formula estimates reverberation time from room volume and equivalent absorption area:
RT60 = 0.049 × V ÷ A when using feet
RT60 = 0.161 × V ÷ A when using meters
The Sabine formula estimates reverberation time using room volume divided by equivalent absorption area, multiplied by a unit-based constant.
RT60 is the time it takes for sound in a room to decay by 60 decibels after the sound source stops.
Absorption area can be estimated by multiplying total surface area by the average absorption coefficient.
You can reduce RT60 by adding sound absorption, such as acoustic panels, carpet, curtains, upholstered furniture, ceiling clouds, or other absorptive materials.