Tile Calculator
Estimate tile counts, boxes, grout spacing, and a waste allowance for floors, walls, and backsplashes.
Preparing your calculator…
How this calculator works
Estimate tile modules using (tile length + grout width) × (tile width + grout width), in square inches. Divide project area in square inches by this module, apply waste, and round to whole tiles and boxes. Purchased coverage excludes grout. Cuts, borders, patterns, and edge spacing require a layout review.
Use current quotes, local rates, and measured dimensions to make this estimate useful for your situation.
Frequently asked questions
How much tile waste should I allow?+
The allowance depends on room shape, cuts, patterns, and spare pieces. Diagonal or intricate layouts can need more than a straightforward rectangular floor.
Does grout count as coverage?+
Yes in the estimated installed module, but purchased material coverage counts only the actual tile faces. The tool is an area estimate, not a row-by-row layout.