Determine exactly how many tiles to buy for your renovation
Calculating tiles involves measuring the total floor area and dividing it by the surface area of a single tile. Always include an extra percentage for cuts and breakage.
A 10x10 room is 100 square feet. If you use 12x12 inch tiles, you need exactly 100 tiles. However, with a 10% wastage allowance, you should purchase 110 tiles.
Wastage allowance accounts for tiles that are broken during transport or cut into smaller pieces to fit corners and edges. Standard allowance is 10%, but for diagonal patterns, 15% is recommended.
Multiply the tile length by the tile width. For example, a 24x24 inch tile covers 4 square feet ($2 \times 2 = 4$).