Tile Calculator
Enter the size of the area and the size of one tile. The calculator gives the number of tiles to buy, with extra for cuts and breakages, and how many boxes that is.
Type a number and the answer appears straight away.
Tiles needed13214 boxes of 10
- Area to cover
- 120 sq ft
- One tile covers
- 1 sq ft
- Tiles without waste
- 120
- Area including waste
- 132 sq ft
Grout lines are ignored, which leaves a small extra margin. Buy from the same batch so the shade matches.
The math behind it: Tile
tiles = area / area of one tile, plus the waste allowance, rounded up
A 10 ft by 12 ft floor is 120 square feet. With 12 inch tiles that is 120 tiles, or 132 with 10% added for waste, which comes to 14 boxes of ten. Larger tiles need fewer pieces but often more waste, because each cut loses more.
Common questions
How many tiles do I need?
Divide the area to be tiled by the area of one tile, then add 10% for cuts and breakages. A 120 square foot floor needs 132 tiles that are 12 inches square.
How much extra tile should I buy?
10% for a straightforward layout, and 15% for diagonal patterns or rooms with lots of corners. Keep a few spares for future repairs.
How many 12x24 tiles do I need for 120 square feet?
Each 12 by 24 inch tile covers 2 square feet, so 60 tiles, or 66 with 10% for waste.
You might also need
Checked and updated: