Apps & Tools

Reverb Room Size Estimator

Use Sabine's formula to estimate RT60 and calculate the acoustic treatment needed to hit your target.

Target RT60

Desired RT60 — 0.4s

0.4s

Vocal Booth (0.2s) Home Studio (0.4s) Live Room (0.7s) Concert Hall (1.8s)

Room Usage

Room Dimensions (Rectangular)

Length (m)

Width (m)

Height (m)

Current Wall Treatment

Results

Room Volume—

Total Surface Area—

Current Estimated RT60—

Target RT60—

Difference—

Additional Absorptive Area Needed—

Sabine: RT60 = 0.161 × V / (α × S) | V = room volume (m³), S = total surface area (m²), α = average absorption coefficient

Embed This Tool

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Knowledge Base

How to Use the Reverb Calculator

The Reverb Calculator estimates room dimensions and reverb characteristics based on audio duration and frequency response. Use this when reverse-engineering a reverb sound or designing space for recording.

Understanding Reverb

Reverb is the collection of echoes that bounce off walls, floor, ceiling, and objects in a room. Small rooms have short, tight reverb. Large rooms have long, boomy reverb. Concert halls sound different from bedrooms.

Reverb Parameters

Decay Time (RT60): How long sound takes to drop 60 dB after the source stops. Small room: 0.5s. Large hall: 2-3s.
Pre-delay: Time before reverb starts. Longer pre-delay (20-80ms) sounds more spacious.
Frequency-Dependent Decay: Low frequencies reverberate longer than highs (realistic).
Early Reflections: First distinct bounces. Define room character.

Designing Reverb in Your DAW

Short reverb (0.5-1s) works for drums and percussion. Medium reverb (1-2s) for vocals. Long reverb (2-4s) for pads and ambient sounds. Always use pre-delay to keep source definition clear.

FAQ

Q: Should I use convolver or algorithmic reverb?
A: Convolvers sound more realistic (they're recordings of real spaces). Algorithmics are more tweakable. Use both.

Q: How much reverb is too much?
A: If you can't understand lyrics or instruments, reduce wet level. Reverb should enhance, not obscure.