Tile Calculator
Enter the area and tile size to see how many tiles and boxes you need, including waste for cuts.
ft
ft
in
in
%
Tiles needed-
Area-
Boxes-
Each tile covers-
Turn this into a professional estimateAdd your prices and customer, then download a clean PDF in about 2 minutes. Free.
Create an estimate →
How to calculate tile
Area (sq ft) x 144 / (tile width x tile length in inches) = tiles needed. Add 10% waste for straight layouts and 15 to 20% for diagonal, herringbone or large-format tile with many cuts.
Buy an extra box and keep it: matching tile can be impossible to find later.
Questions
How many 12x24 tiles do I need for 100 sq ft?
Each 12x24 tile covers 2 sq ft, so 50 tiles, or 55 with 10% waste.
How much waste should I add for tile?
10% for simple straight layouts, 15% for diagonal, and up to 20% for herringbone or rooms with many cuts.
Does grout line size change the tile count?
Slightly, but for most jobs the waste factor covers it. Grout lines are usually 1/16 to 1/4 inch.