Acoustic Panel Calculator

Calculate how many acoustic panels you need to treat a room. Most rooms achieve good acoustics at 15 to 25 percent surface coverage.

Panels Needed
— panels
Rounded up.

Usage Tip

Spread panels across different walls and the ceiling rather than clustering them; first-reflection points matter most.

THE MATH
coverage area = room area × (target % ÷ 100)
panels = round up( coverage area ÷ panel area )
Acoustic panels absorb sound to cut echo and reverberation. Coverage is the fraction of room surface you treat, and panel count is that area divided by one panel size.
Enter the room area, a target coverage percentage (15 to 25 percent works for most rooms), and the panel size.
The result rounds up to whole panels.
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.