Tiling a floor, bathroom or splashback? Count your tiles and boxes.
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Divide the area by the size of one tile plus its grout joint, then add 10% for cuts and breakages — 15% for diagonal layouts, herringbone or large-format tiles.
Round up to whole boxes and buy from one batch so the shade matches. Keep a few spare tiles for future repairs.
| Units | Feet & inches |
| Area length (ft or m) | 10 |
| Area width (ft or m) | 8 |
| Tile length (in or cm) | 12 |
| Tile width (in or cm) | 12 |
| Grout joint | 3 mm |
| Waste allowance | 10% |
| Tiles per box | 10 |
| Price per box (optional) | 0 |
| Currency | $ |
| Tiles needed | 87 tiles |
| Boxes (10 per box) | 9 |
| Area | 80 sq ft · 7.43 m² |
| Without waste | 79 tiles |
87 tiles.
| Units | Metres & centimetres |
| Area length (ft or m) | 3 |
| Area width (ft or m) | 2 |
| Tile length (in or cm) | 60 |
| Tile width (in or cm) | 30 |
| Grout joint | 3 mm |
| Waste allowance | 10% |
| Tiles per box | 8 |
| Price per box (optional) | 0 |
| Currency | $ |
| Tiles needed | 37 tiles |
| Boxes (8 per box) | 5 |
| Area | 64.6 sq ft · 6 m² |
| Without waste | 33 tiles |
37 tiles.
About 100 tiles of 12 × 12 in, plus 10% waste = 110.
10% for straight layouts, 15% for diagonal or herringbone.
2–3 mm for rectified wall tiles, 3–5 mm for most floor tiles, more for rustic tiles.
11.1 tiles of 30 × 30 cm, or 5.6 of 60 × 30 cm.