Room Acoustics & Soundproofing Calculator

Room Dimensions

Room Length (feet)

Room Width (feet)

Room Height (feet)

Soundproofing Level

Walls to Treat

All Walls Ceiling Floor Acoustic Panels

Materials Needed

50

Expected STC Rating

Sound Transmission Class

75%

Noise Reduction

$0

Estimated Cost

Material List

Insulation (R-13 fiberglass)

For sound absorption in wall cavities

0 batts

Additional Drywall Layer (5/8")

For increased mass and STC rating

0 sheets

Green Glue Damping Compound

Viscoelastic damping between drywall layers

0 tubes

💡 Pro Tip

Soundproofing works best with multiple strategies: mass (drywall), damping (green glue), absorption (insulation), and decoupling (resilient channels).

How to Use

Enter your room dimensions (length, width, height)
Select your desired soundproofing level
Choose which surfaces to treat (walls, ceiling, floor)
Optionally add acoustic panels for echo control
Click "Calculate Soundproofing Materials" for your material list

Soundproofing Guide

STC Ratings Explained

STC 30: Normal speech clearly heard. STC 40: Loud speech understood. STC 50: Loud sounds barely audible. STC 60: Most sounds don't penetrate. STC 70+: Studio quality.

Mass Principle

Adding mass blocks sound. Double 5/8" drywall adds +5-10 STC. Use Type X (fire-rated) for even better performance - it's denser than regular drywall.

Damping & Decoupling

Green Glue between drywall layers converts sound to heat (+9 STC). Resilient channels break direct contact, preventing vibration transfer (+5-8 STC).

Don't Forget Gaps

Seal all penetrations: outlets, switches, doors, windows. Use acoustic caulk. A 1% gap can reduce soundproofing effectiveness by 30%. Door sweeps are essential.

🔇 Room Acoustics & Soundproofing Calculator