Project Settings
Switching units converts values shown in inputs only.
in
in
Accounts for offcuts, defects, layout inefficiency.
in
Subtracts twice this value from length and width.
Additional overage for saw kerf and trimming.
sheets
Zero disables bundle rounding.
Impacts layout assumptions in notes only.
Areas to Cover
| Name | Length | Width | Subtract Openings (area) | Net Area |
|---|
All dimensions currently in inches.
Results
Total Coverage Area
0
sq in
One Sheet Area
0
sq in
Raw Sheet Count
0
Overage Applied
0%
Recommended Sheets
0
Bundle-Rounded
0
Assumptions: rectangular areas, straight layout, optional rotation, uniform waste, expansion gaps subtracted.
Example Data
These presets demonstrate typical rooms. Click Load Example in settings to auto-fill inputs.
| Case | Areas (L×W) | Sheet Size | Waste% | Gap | Sheets |
|---|
Formula Used
For each area i: Leff,i = max(Li - 2·gap, 0) Weff,i = max(Wi - 2·gap, 0) Anet,i = max(Leff,i × Weff,i - openingsi, 0) Total coverage area: Atotal = Σ Anet,i Single sheet area: Asheet = sheetWidth × sheetHeight Raw sheets (unrounded): Nraw = Atotal / Asheet Overage blending waste and kerf: overage = 1 + (waste% + kerf%)/100 Recommended sheets: N = ceil(Nraw × overage) Bundle rounding (optional): if bundleSize ≥ 2 then Nbundle = ceil(N / bundleSize) × bundleSize
Notes: This calculator estimates by coverage area and does not perform exact panel nesting. For complex layouts or heavy ripping, increase overage or perform a detailed cut plan.
How to Use
- Choose your unit system and a sheet-size preset or enter custom dimensions.
- Set waste/overage, kerf allowance, perimeter gap, and optional bundle rounding.
- Add each area to cover. Enter length, width, and any openings area to subtract.
- Click Calculate to see total coverage, raw count, and recommended sheets.
- Use Download CSV or Download PDF to export sharable results.
- For rooms with complex shapes, split into rectangles and add as separate rows.
FAQs
It’s a coverage-based estimate. Actual sheet counts depend on seam placement, cut layout, defects, and grain/orientation constraints. Add overage or plan a detailed cut map when precision matters.
Common 4×8, 4×9, 4×10, and 5×5 panels, plus popular metric sizes. You can also specify any custom width and height to match local stock availability.
For each rectangle, the calculator subtracts twice the gap from both length and width before computing area, modeling expansion joints or edge clearances during installation.
Saw kerf and trimming produce additional loss beyond general waste. The kerf percentage is added to the waste percentage for a combined overage factor.
If panels are sold in bundles, you can round the recommendation up to the next multiple of a chosen bundle size for simpler ordering and consistent packaging.
Yes. You can disallow rotation if grain direction or veneer face dictates a specific orientation. This primarily affects layout assumptions, not the coverage formula.