Calculator
Example Data Table
| Scenario | Room (L×W×H) | Surfaces | Coverage | Panel Size | Openings | Waste |
|---|---|---|---|---|---|---|
| Potting shed workstation | 4×3×2.6 m | Walls + Ceiling | 30% | 0.6×0.6 m | 1.5 m² | 10% |
| Garden studio recording nook | 5×4×2.7 m | Walls | 35% | 1.2×0.6 m | 2.0 m² | 12% |
| Tool room echo control | 3×2.5×2.4 m | Ceiling | 25% | 0.6×0.6 m | 0.5 m² | 8% |
These examples are illustrative; adjust coverage and waste to match your build quality and mounting method.
Formula Used
- Wall area = 2×(L×H) + 2×(W×H)
- Ceiling area = L×W
- Total surface = selected surfaces sum
- Net surface = Total surface − Openings area
- Target covered area = Net surface × (Coverage% ÷ 100)
- Target with waste = Target covered area × (1 + Waste% ÷ 100)
- Panels needed = ceil(Target with waste ÷ Panel area)
How to Use This Calculator
- Select your units, then enter room length, width, and height.
- Choose the surfaces you want treated: walls, ceiling, or both.
- Enter panel dimensions and your target coverage percentage.
- Add openings area to exclude doors and windows from totals.
- Set a waste factor for spare panels or trimming losses.
- Press Calculate to see panels needed and coverage achieved.
- Use Download CSV or PDF to share the computed plan.