Acoustic Glass Rating Calculator

Estimate STC and OITC sound ratings for insulating glass units based on glass thickness, air gap, and laminate interlayer.

Outer Glass Thickness

Inner Glass Thickness

Air/Gas Gap

Laminate Interlayer

Test Frequency

Tab to move between fields

Estimated STC Rating

38.1

Estimated OITC Rating

31.1

Noise Reduction38.1 dB

Mass Law TL41.54 dB

How to Use This Calculator

Enter the Outer Glass Thickness and Inner Glass Thickness in mm.
Enter the Air/Gas Gap in mm and any Laminate Interlayer thickness (0 if no laminate).
Enter the Test Frequency in Hz for the mass-law transmission loss calculation.
Review the Estimated STC Rating and OITC Rating for the glazing assembly.
Check Noise Reduction in dB to select the right glazing system for your acoustic target.

How the result changes with Outer Glass Thickness

Outer Glass Thickness: Thickness of the outer glass pane (3mm, 4mm, 6mm are common).
Inner Glass Thickness: Thickness of the inner glass pane.
Air/Gas Gap: Width of the air or gas-filled gap between panes.
Laminate Interlayer: Thickness of PVB or acoustic laminate interlayer (0 if none, 0.76mm typical).
Test Frequency: Frequency of interest for mass law calculation (500-2000 Hz typical).

Identify Input Parameters
4 parameters
Outer Glass Thickness = 6, Inner Glass Thickness = 6, Air/Gas Gap = 12, Laminate Interlayer = 0 = 5 input(s) provided
Calculate Estimated STC Rating
Estimated STC Rating
38.1 = 38.1
Calculate Estimated OITC Rating
Estimated OITC Rating
31.1 = 31.1
Calculate Noise Reduction
Noise Reduction
38.1 = 38.1
Calculate Mass Law TL
Mass Law TL
41.54 = 41.54