Tile quantity chart
Tiles for a square room, by room and tile size, laid centred with 3/16" grout and 10% waste. The counts run above floor area ÷ tile area, because every cut tile still costs a whole tile.
| Room | Floor area | 6" tile | 12" tile | 18" tile | 24" tile |
|---|---|---|---|---|---|
| 6' × 6' | 36 ft² | 186 | 54 | 28 | 10 |
| 8' × 8' | 64 ft² | 318 | 90 | 54 | 28 |
| 10' × 10' | 100 ft² | 486 | 134 | 54 | 28 |
| 12' × 12' | 144 ft² | 688 | 186 | 90 | 54 |
| 14' × 14' | 196 ft² | 926 | 248 | 134 | 54 |
| 16' × 16' | 256 ft² | 1058 | 318 | 134 | 90 |
Reading it
- A 12" tile with a 3/16" joint occupies 12 3/16" of floor, so a ten-foot run takes nine full tiles and a cut at each edge — eleven tiles per row, not ten.
- 10% waste suits a straight layout in a square room. A diagonal wants 15%, and a room full of jogs and alcoves wants more.
- Buy it all in one order. Tile is made in batches and the shade varies between them, so a box bought later to replace a cracked tile will not match.
For the case this table does not cover
- Tile layout
Full tiles across the middle and a sized cut tile at every edge, centred or started from one wall.
- Flooring and decking layout
How many rows, how wide to rip the first one, and where the end joints fall so they never line up.