Tile calculator
From m² and tile size you get net pieces, pieces with waste and boxes (always rounded up).
Purchase quantity
122.22 unit
Net measurement: 111.11 unit · Waste 10 %
- Net tiles111.11 unit
- Tiles to buy122.22 unit
- Boxes needed16 box
Your prices per language/currency. Used when you enable “Use my prices” in calculators. My prices →
Shopping list
What to buy for this calculation. Look up each material at your store.
- Boxes needed · 16 boxSearch at Amazon
How it's calculated (visible formula)
net_pcs = area ÷ (width × length); boxes = ceil(area × (1+waste) ÷ m² per box)
- Net geometric measurement, no waste.
- Adjustable waste % for cuts and breakage.
- Purchase rounded up to sellable units (boxes, bags, buckets, boards).
Worked example: 20 m², 30×60 tile
- Tile: 0.18 m²/pc → 111.11 pcs net
- 10% waste → 122.22 pcs
- 8-pc box (1.44 m²) → 16 boxes
→ 16 boxes (23.04 m² on site).
Common mistakes
- Ordering exact m² instead of full boxes.
- Using 5% on diagonal layouts (needs 15%).
- Forgetting attic stock for future repairs.
Use my prices
Your prices per language/currency. Used when you enable “Use my prices” in calculators.
From calculation to quote
Add labour, overhead and your margin, and generate the professional PDF.
FAQs
- How many tiles per square foot?
- 144 ÷ tile area in square inches. A 12×24 in tile (≈2 ft²) needs about half a piece per sq ft, plus waste.
- How many boxes for 215 sq ft?
- It depends on format and box: 20 m² (≈215 sq ft) in 30×60 with 8-pc boxes takes 16 boxes at 10% waste. The calculator solves it with your numbers.
- How much thin-set per square foot?
- By trowel and format: roughly 0.6–1 lb/ft². The adhesive calculator estimates it from your consumption.
- How much grout do I need?
- It depends on joint and format. The adhesive & grout calculator includes it in the breakdown.
- What waste for tile?
- 10% straight; 12–15% diagonal, herringbone or large formats with many cuts.
- More waste on diagonal?
- Yes: 12–15% diagonal, herringbone or large format with many cuts, vs 10% straight.
- Buy m² or boxes?
- Stores sell full boxes: the result always rounds up.
- Does it work in square feet and inches?
- Yes — switch to Imperial: 20 m² shows as ≈215 sq ft, and tile sizes can be entered in inches instead of cm.
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.