Absorption Coefficient Calculator — Room Absorption
Calculate total absorption and average absorption coefficient for a room from surface areas and material coefficients.
Walls
Floor
Ceiling
Acoustic Treatment (optional)
How We Calculate This
Total absorption A = Σ(S_i × α_i)
The total absorption is the sum of each surface area multiplied by its absorption coefficient.
Average α = A / S_total
The average absorption coefficient is the total absorption divided by the total surface area.
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates based on standard formulas. Always verify results for critical applications.