Standard Tile Sizes

Tile is sold in a handful of standard sizes, from 2 × 2 in mosaics to 24 × 48 in slabs. The chart below lists each one with its area, how many it takes to cover 100 square feet and where it is normally used, with a link to a calculator for that size. Pick a size and an area to count tiles right here.

Count tiles for a size

Tile size

Area (sq ft)

Waste (%)

Tiles needed

110 tiles

One tile covers: 1 sq ft
Tiles per sq ft: 1
Large format (edge ≥ 15 in)?: No

Nominal size; joints are ignored, which slightly overcounts — the safe side.

Tools the pros use for this job

Porcelain Floor Tile
DAP Flexible Floor Patch and Leveler, Light Gray, 32 Oz (7079859184)
$12.98
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The most common modern floor size.
3 × 6 Subway Tile
Art3d 102-Pack Peel and Stick Backsplash on Subway Tile, Glossy White
$39.99
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The classic subway size for walls and backsplashes.
Leveling Clips
DGSL Tile Leveling System with Plier, 300 Tile Spacers 1/8" and 100 Wedges
$25.99
Check price on Amazon
Worth it on anything 15 in or longer.

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Prices as of Oct 2, 2026, 4:36 AM UTC. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

Tile sizes chart

Size	Type	Sq ft per tile	Tiles per 100 sq ft	Typical use
2 × 2 in	Mosaic	0.028	3600	Shower floors (on 12 × 12 sheets) — small tiles follow the slope to the drain
4 × 4 in	Square	0.111	900	Classic bathroom walls, countertops
6 × 6 in	Square	0.25	400	Walls, backsplashes, small floors
8 × 8 in	Square	0.444	225	Encaustic-look and patterned floors
12 × 12 in	Square	1	100	The everyday floor tile; also walls
16 × 16 in	Large format	1.778	57	Larger floors, often ceramic
18 × 18 in	Large format	2.25	45	Living areas and kitchens
20 × 20 in	Large format	2.778	36	Open floors, outdoor pavers
24 × 24 in	Large format	4	25	Open-plan floors, fewer grout lines
3 × 12 in	Plank / rectangle	0.25	400	Elongated subway walls, backsplashes
4 × 12 in	Plank / rectangle	0.333	300	Subway walls and shower surrounds
6 × 24 in	Large format	1	100	Wood-look plank floors
6 × 36 in	Large format	1.5	67	Wood-look plank floors
8 × 48 in	Large format	2.667	38	Wood-look plank floors in long rooms
12 × 24 in	Large format	2	50	The most popular modern floor and wall size
12 × 36 in	Large format	3	34	Large floors and feature walls
24 × 48 in	Large format	8	13	Slab-look floors and walls

Nominal sizes, no waste. Each size links to its own calculator with boxes and grout.

Subway tile sizes

Subway size	Sq ft per tile	Tiles per sq ft
2 × 4 in	0.056	18
3 × 6 in	0.125	8
2 × 8 in	0.111	9
4 × 8 in	0.222	4.5
3 × 12 in	0.25	4
4 × 12 in	0.333	3
4 × 16 in	0.444	2.3
6 × 12 in	0.5	2

3 × 6 in is the original subway size; 2 × 8, 3 × 12 and 4 × 12 are the elongated versions. Count a subway wall with the subway tile calculator.

Choosing a tile size

Bigger tiles mean fewer grout lines and a calmer floor, but they need a flatter substrate and more care to avoid lippage. Small tiles bend with a sloped shower floor and give more grip from the extra grout. In a small bathroom a 12 × 24 floor reads as larger than a busy 4 × 4, while 2 × 2 mosaics stay the norm on the shower floor itself. Plank tiles longer than about 18 in should be offset by no more than a third of their length to keep the centre bow from showing. Our guide to choosing a tile size goes deeper, and the tile calculator handles any custom size.

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How this calculator works

Square feet per tile = width × length in inches ÷ 144. Tiles per 100 sq ft = 100 ÷ that area. The tile count above divides your area by the tile's area and adds waste, rounding up.

Nominal vs actual size. A tile's name is its nominal size. The actual face is often a little smaller so that tile plus grout joint lands on the nominal module, and rectified tile is ground to tighter, squarer edges. ANSI A137.1 sets the tolerances; the actual dimensions are on the box or spec sheet, and they are what to use when laying out a tight space.

Large format. Under ANSI A108.02 any tile with an edge of 15 in or longer is large format. These need a flatter floor, a large-and-heavy-tile mortar, and usually a leveling system.

Frequently asked questions

What are the standard tile sizes?

Square tiles come in 4 × 4, 6 × 6, 8 × 8, 12 × 12, 16 × 16, 18 × 18, 20 × 20 and 24 × 24 in; rectangles and planks in 3 × 12, 4 × 12, 6 × 24, 6 × 36, 8 × 48, 12 × 24, 12 × 36 and 24 × 48 in; mosaics in 1 × 1 and 2 × 2 in on 12 × 12 sheets.

What are the standard subway tile sizes?

3 × 6 in is the classic. Elongated subway tile comes in 2 × 8, 3 × 12, 4 × 12 and 4 × 16 in, and mini subway in 2 × 4 in. A 3 × 6 covers 0.125 sq ft, so 8 tiles make a square foot.

What is the most common floor tile size?

12 × 24 in is the most common modern floor tile, followed by 12 × 12 and 24 × 24 in. One 12 × 24 covers 2 sq ft, so 100 sq ft takes 50 tiles before waste.

What size tile is considered large format?

Any tile with at least one edge 15 in or longer, under the ANSI A108.02 definition — so 12 × 24, 24 × 24 and the long planks all count.

Is a 12 × 12 tile exactly 12 inches?

Not always. 12 × 12 is the nominal size; the actual tile can be slightly smaller so tile plus grout joint fits the 12 in module. Check the actual size on the box before planning a tight layout.

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Last updated: August 26, 2026 · Reviewed by the Smart Tile Calculator editorial team