Results are planning estimates. Large-format tile installation has specific substrate requirements — verify with a qualified tile setter before purchasing materials.

24×24 Tile Calculator

Pre-set for 24×24 in (4 sq ft) large-format square tiles. Enter room dimensions to find how many tiles and boxes you need.

Room Dimensions

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Box Info

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Tiles Needed
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Frequently Asked Questions

How many 24×24 tiles do I need per square foot?

A 24×24 in tile covers 4 sq ft (2 ft × 2 ft). For 100 sq ft with 10% waste: ⌈100 / 4 × 1.10⌉ = 28 tiles.

What subfloor preparation is needed for 24×24 tiles?

Large-format tiles — any tile with at least one edge 15 in or longer, which includes 24×24 — require a very flat substrate. ANSI A108.02 calls for no more than 1/4 in of variation in 10 ft and no more than 1/16 in in 2 ft for large-format tile. Grind down high spots and fill low spots with patch or self-leveling underlayment before setting, and back-butter each tile to ensure full mortar coverage.

How many 24×24 tiles come in a box?

Typically 4–6 tiles per box covering 16–24 sq ft. The exact coverage is on the box label — use that number, not an estimate.

Do large-format tiles need special adhesive?

Yes. Tiles larger than 15 in require a large-format tile adhesive (often called LFTM or "medium-bed mortar"). Standard thin-set shrinks too much during cure and can cause large tiles to hollow or crack. Use an adhesive rated for your specific tile size.

Can 24×24 tiles be used on walls?

24×24 in is a heavy tile. Wall installation requires an adhesive rated for large-format wall tile with non-slump properties. Consult your adhesive manufacturer's technical data sheet and confirm the wall substrate can support the weight.