Tile pattern waste calculator
Area, layout pattern, tile size and coverage per box: you get the right waste percentage, square footage and boxes.
Purchase quantity
22 m²
Net measurement: 20 m² · Waste 10 %
- Boxes of tile16 box
- Waste applied10 %
- Tile to buy22 m²
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How it's calculated (visible formula)
waste = pattern base (straight 7%, offset 10%, diagonal 15%, herringbone 20%, Versailles 18%) + 3% for tiles ≥ 24 in
- Net geometric measurement, no waste.
- Adjustable waste % for cuts and breakage.
- Purchase rounded up to sellable units (boxes, bags, buckets, boards).
How to calculate it, step by step
- Measure the area to tile.
- Choose the layout pattern.
- Enter the tile's longest side.
- Apply the pattern's waste (more for large format).
- Divide by box coverage and round up.
Worked example: 215 sq ft straight lay, 24 in tile, 15.5 sq ft boxes
- 7% + 3% large format = 10%
- 215 × 1.10 ≈ 237 sq ft
- 237 ÷ 15.5 = 15.3
→ 16 boxes.
Common mistakes
- 5% waste for herringbone or diagonal.
- No spares for future repairs.
- Laying out from a wall — thin slivers at edges.
Pro tips
- Lay out from the center so border cuts match.
- Add a couple more points of waste in small rooms.
- Buy one lot and caliber.
- Keep a spare box for repairs.
From calculation to quote
Add labour, overhead and your margin, and generate the professional PDF.
FAQs
- How much waste for diagonal tile?
- About 15%.
- Herringbone?
- About 20%, more in small rooms.
- Why more for large format?
- Each cut wastes more area and big tiles break more.
- Which pattern wastes least?
- Straight stack (grid).
- Why does large format waste more?
- Each offcut loses more area and big tiles break more in handling.
- Waste for a ⅓ offset?
- Similar to half offset — about 10%.
Sources and standards
Maintained by Srikanta M · Formula v1.0.0 · Verified 2026-09-10 · Updated 2026-09-10 · Limits: quantity estimation, not structural design or site supervision.