10 November, 2026
Tile Sizes: Standard Australian Formats and How to Choose
Confused by tile sizes? Our guide covers standard Australian wall and floor formats to help you choose with confidence.
With so many formats on the market, choosing a tile size can feel like wandering a maze. A handful of simple rules, though, sort it out quickly. 300x600 works well on walls thanks to its crisp, versatile look, while 600x600 is usually the better pick for floors in living areas and bathrooms. Go bigger on size, and two things become non-negotiable: a dead-flat substrate and a tradie who actually knows the trade. Once each surface has the correct size sorted, everything else in the order — porcelain or ceramic, box quantities, slip rating — tends to fall into place.
Video Credit: Habitual Homes
How Tile Size Shapes a Room's Look
Smaller tiles bring more grout lines, and those lines add up quickly.
Plenty of people don't realise how heavily tile size influences the final result of a remodel. More grout lines come with smaller tiles, and that visual clutter can make a room feel smaller; fewer joints with larger tiles give a cleaner look and a roomier feel. Neither option is wrong here; it really comes down to the look you want and what the room needs to achieve.
Understanding Tile Sizes to Order the Right Amount
Practicality takes over once the look's settled; correctly reading a product listing is what gets the right size and quantity onto your order.
A bit lost at first? Fair enough, that's a common reaction. A single product name can cover several sizes at once — the Anthology Ash Matt Stone Look 300/600/1200mm Tile is one example. This simply means the finish comes in multiple sizes; just choose whichever suits from the product page options. Mosaics follow different rules: the listing shows both the sheet dimensions and the size of each individual piece. A 299x305mm sheet made up of 48x98mm pieces is a fairly typical example. Porcelain and ceramic seem like a coin toss only until you understand what actually separates them.
Water absorption is really where the two part ways: ceramic sits higher, while porcelain (AS 13006:2020) rates lower for water absorption. Never guess which one you're buying; check the figure every time.
Most tiles are priced and sold by the square metre and come in full boxes, so make sure you measure your area, talk to your tiler about how much waste to account for and order the number of full boxes needed. Mosaics are sold by the sheet, trims are sold individually.
Wall Sizes You'll Commonly See
Walls don't take foot traffic and nothing drops on them, so style takes priority over durability.
| Tile Format | Size | Typical Application |
|---|---|---|
| Subway | 60x250mm | Walls |
| Subway | 75x300mm | Walls |
| Subway | 100x200mm | Walls |
| Standard wall/floor | 300x600mm | Walls, some floors |
| Standard floor | 600x600mm | Living areas, bathroom floors |
| Large format | 600x1200mm | Floors, matching wall-floor schemes |
| Mosaic sheet | 299x305mm | Walls, feature areas |
Among wall tile formats, 300x600 is one of the most popular, and the layout pattern is really what gives it character. A grid stack delivers a crisp, modern feel, while a brick-style run softens things toward traditional — one tile, two very different outcomes. Subway tiles typically come in smaller metric sizes such as 60x250, 75x300 and 100x200mm; mosaics, on the other hand, are usually priced per sheet rather than by the square metre. A lot of wall tiles double as floor tiles, so don't rely on the Wall & Ceiling Tile tag alone — have a look at the Applications line on the product page as well. Eager to match your walls and floors? Try to find a listing offering 300x600, 600x600 and 600x1200.
Floor Tile Sizes People Choose Most
Foot traffic hits floors constantly, and in bathrooms water does too, so sizing has to tick the Applications line and the slip rating box — looks alone don't cut it.
For living areas and bathroom floors, I usually reach for 600x600 tiles; they give a contemporary look without the installation headaches that full large-format can bring. Before you fall for a floor tile, check two things on the product page: floor rating and slip rating. P3 (AS 4586:2013) is typically recommended for residential bathroom floors, but the National Construction Code doesn't prescribe a minimum slip rating for houses. In the shower, the floor will need to fall to the floor waste at between 1:80 and 1:50, so it pays to show your tiler the tile you've chosen before you place the order.
What Large-Format Tiles Demand
Nothing else asks more of your substrate and installer than the largest format tiles do — know what's involved before the look sways your decision.
A near-seamless finish with barely-there grout is exactly why designers reach for 600x1200 tiles. Installation, though, is a whole other story. You can't skip either a flat substrate (AS 3958:2023) or genuine trowel skill here, and adhesive selection (AS ISO 13007.1:2020) matters even more at this size — ask your tiler which product suits both the tile and the substrate. A quick weekend DIY attempt won't cut it here. Build extra prep time into the quote, and get someone experienced with this format on the job. In bathrooms, a waterproofing membrane sits beneath these tiles. A licensed waterproofer needs to install and cure that membrane before any tiling begins — yet another reason a licensed tiler makes sense.
Smaller formats like 300x600 tiles are generally quicker and cheaper to lay than large formats.
References
AS 13006:2020 Ceramic tiles — Definitions, classification, characteristics and marking, Standards Australia
AS 4586:2013 Slip resistance classification of new pedestrian surface materials (incorporating Amendment No. 1:2017), Standards Australia
AS 3958:2023 Installation of ceramic and stone tiles (incorporating Amendment No. 1:2024), Standards Australia
AS ISO 13007.1:2020 Ceramic tiles — Grouts and adhesives, Part 1: Terms, definitions and specifications for adhesives, Standards Australia
