Calculate the number of tiles needed for floors and walls with wastage allowance.
| Room Area | — |
| Tiles (no wastage) | — |
| Wastage Tiles | — |
| Total Tiles to Buy | — |
| Boxes (if 10/box) | — |
Always add 10% extra for wastage (cutting, breakage, pattern matching). For diagonal patterns, add 15%. Buy from the same batch to avoid colour variation. For Indian homes, 60×60 cm tiles are standard for floors.