Tile Calculator
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

Room Area
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Tiles Needed
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Boxes to Buy
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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 (anything over 15 in on either side) require a very flat substrate. The Tile Council of North America (TCNA) specifies no more than 1/8 in variation in 10 ft for tiles up to 15 in; for tiles larger than 15 in the limit is 1/8 in in 10 ft (3 mm in 3 m). Consult the current TCNA Handbook for the most recent standards.

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.