Room Echo Time Calculator for Garden Spaces

Tune your potting shed or greenhouse acoustics. Pick surfaces, add soft plants, and see impact. Get clear RT60 targets for comfortable conversations outdoors nearby.

Inputs
Enter your room size and surface choices, then calculate.
Targets adjust based on the selected space.
Constant changes automatically for units.
Eyring behaves better when α is higher.
Or set a custom α below to override.
Greenhouse roofs often act like glass.
Bare hard walls raise echo quickly.
Benches, bags, curtains, rugs, storage bins.
Dense foliage helps scatter and absorb sound.
people
sabins / person
Approx. 0.4–0.7 sabins per person.

Example Data Table

Sample scenarios for garden workspaces. Your results vary by materials and clutter.
Space Size (m) Key surfaces Extras (sabins) Method RT60 (s)
Potting shed 6 × 4 × 2.6 Tile floor, drywall walls, drywall ceiling Furn: 6 · Plants: 4 · People: 0.5 Sabine ≈ 0.85
Greenhouse 8 × 5 × 3 Concrete floor, glass ceiling, glass walls Furn: 3 · Plants: 10 · People: 1.0 Eyring ≈ 1.40
Garden studio 5 × 3.5 × 2.7 Thick carpet, panels, curtains Furn: 10 · Plants: 3 · People: 0.5 Sabine ≈ 0.45

Formula Used

This calculator estimates RT60, the time sound needs to decay by 60 dB. It uses room volume and the total sound absorption of your surfaces.

  • Surface areas: Floor = L×W, Ceiling = L×W, Walls = 2×(L×H + W×H)
  • Total absorption: A = Σ(area × α) + extras (sabins)
  • Sabine: RT60 = K × V / A (K = 0.161 metric, 0.049 imperial)
  • Eyring: RT60 = K × V / ( −S × ln(1 − A/S) )

How to Use This Calculator

  1. Pick the garden space type to load a sensible target range.
  2. Enter length, width, and height using your chosen units.
  3. Select floor, wall, and ceiling presets or set custom α values.
  4. Add extra sabins for rugs, curtains, tools, and plant clusters.
  5. Press Calculate Echo Time to view the result above.
  6. Export the latest result using the CSV or PDF buttons.

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Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.