30 sq ft of 3×6 tile takes 265 tiles — 4 boxes — including 17% for cuts, plus 1 bag of thinset and 1 × 25-lb bag of grout.
| Tile | Pieces | Boxes | Tile cost |
|---|---|---|---|
| Mosaic 12×12 sheets | 36 | 36 sheets | $540 |
| 3×6 subway | 265 | 4 | $48.00 |
| 4×12 subway | 105 | 7 | $106 |
| 4×4 4¼ wall | 272 | 3 | $111 |
| 6×24 plank | 38 | 4 | $123 |
| 12×12 ceramic | 36 | 3 | $48.90 |
| 12×24 porcelain | 19 | 3 | $99.84 |
| 24×24 porcelain | 10 | 3 | $139 |
| 24×48 large format | 5 | 2 | $184 |
Typical U.S. prices (Floor & Decor and others) checked October 2026. Tap any price to enter your store's.
| Tile | Pieces | Boxes | Thinset bags | Tile cost |
|---|---|---|---|---|
| Mosaic 12×12 sheets | 36 | 36 sheets | 1 | $540 |
| 3×6 subway | 265 | 4 | 1 | $48.00 |
| 4×12 subway | 105 | 7 | 1 | $106 |
| 4×4 4¼ wall | 272 | 3 | 1 | $111 |
| 6×24 plank | 38 | 4 | 1 | $123 |
| 12×12 ceramic | 36 | 3 | 1 | $48.90 |
| 12×24 porcelain | 19 | 3 | 1 | $99.84 |
| 24×24 porcelain | 10 | 3 | 1 | $139 |
| 24×48 large format | 5 | 2 | 1 | $184 |
30 sq ft is about 20 ft of counter at the usual 18 in between countertop and upper cabinets. Subtract windows, but not outlets — you cut around those.
The 17% extra is the recommendation for ½ offset layout in a small room. The full boxes leave 55 spare pieces — keep them for repairs.
The full method, material data and tips are on the main tile calculator page.