Tile Calculator

Tiles = area divided by the area of one tile, then multiplied by the waste allowance. A 12 x 24 inch tile is 288 square inches, which is 2 square feet exactly, so a 120 square foot floor takes 60 tiles before waste.

How many 12x24 tiles do I need for 120 square feet?

Sixty-six. A 12 by 24 tile covers exactly 2 square feet, so 120 square feet is 60 tiles, and 10 percent for cuts brings it to 66.

How much extra tile should I buy?

Ten percent for a straight lay in a square room, fifteen for an offset pattern, twenty for a diagonal or herringbone. Order it all at once: tile is made in dye lots and a later box will be a slightly different shade.

How many bags of thinset do I need?

One 50 pound bag covers roughly 95 square feet with a quarter inch trowel, 70 with a quarter by three eighths, and 50 with a half inch. Larger tile needs a deeper notch, so it needs more thinset.

Do I need to subtract cabinets from the floor area?

Tile under an island, yes, because it shows. Tile under base cabinets, no: most people stop the tile at the cabinet line, so measure the open floor and add the toe kick line.