How many 12×24 tiles do you need?
This reference table uses 12×24 inch tiles, 10% waste and eight tiles per box. Change those values in the Tile Calculator for the product you plan to buy.
Published and reviewed: August 30, 2026 · Method: BetterHomeHabits calculator model
A 12×24 tile covers about 2 square feet before cuts and waste. For planning, multiply the project area by a waste factor, divide by 2 square feet per tile, then round up to whole tiles and boxes.
Reference table
| Room size | Floor area | Tiles incl. 10% waste | Boxes (8 tiles) |
|---|---|---|---|
| 5 × 8 ft | 40 sq ft | 22 | 3 |
| 8 × 10 ft | 80 sq ft | 44 | 6 |
| 10 × 10 ft | 100 sq ft | 56 | 7 |
| 10 × 12 ft | 120 sq ft | 66 | 9 |
| 12 × 15 ft | 180 sq ft | 100 | 13 |
| 15 × 20 ft | 300 sq ft | 165 | 21 |
Assumptions used
- 12×24 in tile
- 10% waste allowance
- 8 tiles per box
- Rectangular area with no excluded zones
Why your result may differ
Real projects can differ because of product coverage, layout, waste, openings, moisture, compaction, site condition, labor scope or measurement error. Treat the table as a benchmark and use the linked calculator with the specifications for your actual project.
Methodology
The table is generated from the same transparent calculation method used by BetterHomeHabits calculators. We publish the assumptions so the numbers can be reproduced and challenged.