Calculate tiles, boxes, grout and thinset for any floor or wall.
Formula: Tile area (sq ft) = (width × height) ÷ 144. Tiles = area × (1 + waste%) ÷ tile area. Boxes = ceil(tiles ÷ tiles per box).
| Size | Tiles per 100 sq ft |
|---|---|
| 4×4 inch | 900 tiles |
| 6×6 inch | 400 tiles |
| 12×12 inch | 100 tiles |
| 18×18 inch | 45 tiles |
| 24×24 inch | 25 tiles |
Tip: Always buy extra tiles from the same lot (dye lot). Future replacements may not match color. Keep 5-10 leftover tiles for repairs.