Formula
Project area = length x width. Tile area = tile length x tile width converted to square feet. Tiles needed = project area x waste factor / tile area.
Floor and wall tile estimator
Tile Calculator
Estimate how many tiles and boxes you need for floors, walls, bathrooms, kitchens, or backsplashes. Enter project area, tile size, tiles per box, and waste allowance.
Calculate tiles needed
Project area
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Tiles needed
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Boxes needed
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Tile coverage
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Example
A 12 ft by 10 ft floor is 120 sq ft. With 12 x 12 inch tiles and 10% waste, you need about 132 tiles.
Useful for
Floor tile, wall tile, shower tile, kitchen backsplash, bathroom renovation, and material ordering.
Tile estimating notes
Tile layouts, cuts, breakage, pattern direction, grout width, and future repairs affect quantity. Buy extra tiles from the same lot when color consistency matters.
FAQ
How much tile waste should I add?
Straight layouts often use 10% waste. Diagonal, herringbone, complex cuts, or small rooms may need 15% or more.
Should grout spacing be included?
This calculator ignores grout spacing for a simple estimate. For large tiles or precise layouts, include spacing in your tile module size.