Tile Calculator

Count the tiles and boxes you need for a floor or wall, plus waste.

Room length

Room width

Tile length

Tile width

Waste (%)

Tiles per box

Price per box ($)

Tiles needed (tiles) 132

Boxes needed (boxes) 14

Total cost ($) 0

Formula: tiles = roomArea ÷ tileArea × (1 + waste)

Step-by-step with your numbers:

1. Values used:

2. Room length = 12

3. Room width = 10

4. Tile length = 12

5. Tile width = 12

6. Waste = 10 %

7. Tiles per box = 10

8. Price per box = 0 $

10. Tiles needed = 132tiles

11. Boxes needed = 14boxes

12. Total cost = 0$

Did we solve your problem today?

Quickly work out how many tiles (and boxes) to buy for any floor or wall. A waste allowance covers cuts, breakage and future repairs.

The math behind it

Room area = length × width. Tile area = (tile length × tile width) ÷ 144 to convert in² to ft².

Tiles = room area ÷ tile area, rounded up, plus waste. Boxes = tiles ÷ tiles-per-box, rounded up.

120 ft² room, 12×12 in tiles (1 ft² each), 10% waste → 132 tiles → 14 boxes of 10.

How much waste should I add for tile?

10% for straight layouts, 15–20% for diagonal or patterned layouts.