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Tile boxes

Estimate tile boxes and tile count for a floor.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

Your details

Room length (ft)

Room width (ft)

Tile size

Coverage per box (sq ft)

Waste allowance (%)

Results update as you type. The formula and assumptions are explained below the calculator.

Tile boxes needed

9 boxes

Floor area120 sq ft

Area including waste132 sq ft

Tiles needed132 tiles

Coverage per box15 sq ft

Layout, grout joints and cuts all affect the final count, and box coverage varies by product. Keep at least one spare box for future repairs.

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Tile Calculator

Estimate tiles, boxes and waste for a floor or wall.

What does this tool do?

Tile is sold by the box, with coverage depending on the tile size. This calculator converts the floor area plus cutting waste into tiles and boxes, using the coverage printed for one box.

The Formula

Boxes = ⌈Floor area × (1 + Waste ÷ 100) ÷ Coverage per box⌉

Frequently Asked Questions

How many boxes of tile for 120 sq ft?

With 15 sq ft per box and 10% waste, nine boxes cover the floor.

How much tile waste should I allow?

10% is standard, and 15% is safer for diagonal layouts, small tiles or rooms with many cuts.

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