Acoustic Insulation Calculator Pro (USA)
Calculate Sound Transmission Class (STC) and estimate noise reduction for your construction or renovation project using standard USA materials.
Project Parameters
Understanding STC (USA Standard)
STC (Sound Transmission Class) is the US standard rating for how well a building partition reduces airborne sound.
According to US building standards, a standard interior wall has an STC of 33. For bedroom privacy, aim for STC 45+. For home theaters or recording studios, aim for STC 60+.

