Acoustic Calculator

Calculate modal frequencies, RT60, Schroeder frequency, and more. All formulas from SSOT physics constants.

f(n) = n × 343 / (2 × L)

Room dimension (m): Mode number (n):

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f = 2000 × √(RT60 / V)

RT60 (seconds): Room volume (m³):

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RT60 = 0.161 × V / A

Room volume V (m³): Total absorption A (m² Sabins):

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Load SSOT values into calculators.

SSOT v3.0 · 2026-03-25 · Source: DXF → ezdxf → SSOT