Calculators / Tile and flooring

Tile calculator

Measure the floor and pick the tile. You'll get the tiles and boxes to buy, with the waste built in.

Updated · How we check our numbers

These are example numbers. Put in yours.

The room

ft

Fractions work: 12 1/2.

ft
ft

Leave blank for a plain rectangle.

ft

The flooring

Flooring
Tile size
Layout
sq ft

Off the box label. Leave blank to use a placeholder.

Order this much

184.8 sq ft of tile

That's 93 tiles (12 × 24), or 12 boxes at 16 sq ft, with 10% for cuts.

Floor
168 sq ft
With waste
184.8 sq ft
Tiles
93
Boxes
1216 sq ft a box
See 12 × 24 floor tile on Amazon (opens Amazon in a new tab)

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Estimate for planning only, not professional advice. Check the manufacturer’s instructions, your local code and a licensed professional before you buy, build or install. Use at your own risk. Terms.

room = 14 × 12 ft = 168 sq ft

with waste = 168 × 1.1 = 184.8 sq ft (10% for a straight lay)

one tile = 12 × 24 in ÷ 144 = 2 sq ft

tiles = 184.8 ÷ 2 = 93

boxes = 184.8 ÷ 16 = 12

Large format

At 24 in, this is large-format tile. Set it in large-format thinset, and check the floor is flat: big tile shows every dip.

Box size

We used 16 sq ft a box as a placeholder. Box sizes vary by brand, so put in the number off the label.

Spares

Keep a box of spares. Dye lots change, and a cracked tile is hard to match later.

How we work it out

sq ft = length × width (plus the second part of an L-shaped room)

to buy = sq ft × 1.10, or × 1.15 for diagonal and herringbone

Then we divide by the size of one tile for the count, and by the box coverage for boxes. Box sizes vary by brand, so put in the number off the label. Tile 15 in or longer on a side is large format: it wants large-format thinset and a flat floor.

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