How Many Tiles for a 12x15 Room?

198 tiles

A 12 × 15 ft room (180 sq ft) needs 198 tiles of 12 × 12 inch tile, including 10% extra for cuts and breakage. Without the extra it would be 180 tiles.

Tiles for a 12 × 15 ft room by tile size (10% extra included)

Tile sizeTiles needed
12 × 12 in198 tiles
12 × 24 in99 tiles
24 × 24 in50 tiles
6 × 24 in plank198 tiles

Adjust the numbers

The calculator below is pre-filled with the numbers above. Change any value to match your project.

Floor or wall
ft
ft
in
in
Options
%
10% for straight layouts, 15% for diagonal or herringbone.
Tiles needed198 tiles
Boxes
20 boxes
Area to cover
180 sq ft
Without extra
180 tiles

How it is calculated

The area to tile (length × width) is divided by the area of one tile. Tile sizes are entered in inches, so the tile area is divided by 144 to convert it to square feet.

An extra percentage is added for tiles that are cut at the edges, broken or set aside for future repairs. The result is rounded up to whole tiles and whole boxes.

Open the full tile calculator for other shapes, a worked example and FAQs.

Other common sizes