Standard sizes
| Nominal | Typical actual | Covers | Notes |
|---|---|---|---|
| 2x2 | ~23¾" × 23¾" | 4 sq ft | Most popular; more finished look |
| 2x4 | ~23¾" × 47¾" | 8 sq ft | Fewer parts; budget and utility spaces |
| 1x1 | 12" × 12" | 1 sq ft | Glue-up or staple-up (not drop-in) |
| 600 × 600 mm | 595 mm | ~3.9 sq ft | Metric: won’t fit U.S. grids |
Grid widths
- 15/16": standard residential and most commercial grid.
- 9/16": narrow “slim” grid for a sleeker look; needs tiles made for it.
Edge types
- Square lay-in: flat, sits flush in the grid.
- Tegular / reveal: stepped edge drops below the grid. See tegular tiles.
Measuring a replacement tile
Measure an existing tile’s exact size and thickness, note the edge, and look for an item number on the back. Then compare at 2x2 or 2x4.