Can you use wall tile on the floor?

Usually not. Wall tiles are often thinner, more delicate, and rated for little or no foot traffic, and many have a glossy glaze that's slippery underfoot. Always check the tile's PEI rating and slip rating — if it isn't rated for floors, don't use it there.

Can you use floor tile on the wall?

Often yes, as long as the wall and adhesive can carry the weight. Floor tiles are heavier, so you need the right thinset and, for large or heavy tiles, the wall structure to support them. Many people deliberately run the same floor tile up the wall for a seamless look.

What's the difference between floor tile and wall tile?

Floor tile is thicker, harder, and rated for foot traffic and slip resistance. Wall tile is usually thinner and lighter, prioritises looks over durability, and often isn't safe to walk on. The calculation math is identical — the difference is the product you choose, not how you count it.

Do I calculate floor and wall tile the same way?

Yes — area divided by tile coverage, plus a waste allowance. The only practical difference is that walls almost always have openings (windows, doors) to subtract, and you measure height × width instead of length × width.

Floor Tile vs Wall Tile: What's the Difference?

Quick answer: Floor tile is thicker, harder, and rated for foot traffic and slip resistance. Wall tile is usually thinner, lighter, and chosen for looks. You can often put floor tile on a wall, but you should rarely put wall tile on a floor. Either way, you count them the same: area ÷ tile coverage, plus waste.

Walk down any tile aisle and you’ll see tiles split into “floor” and “wall” — and plenty that say “floor & wall.” It’s a genuinely useful distinction, but it confuses a lot of people planning their first project. Here’s what actually separates the two, when you can mix them, and why it doesn’t change how you work out quantities.

The real differences

	Floor tile	Wall tile
Thickness	Thicker (often 8–10 mm+)	Thinner (often 6–8 mm)
Hardness	Hard, traffic-rated	Softer, not for traffic
Slip resistance	Matters a lot	Not relevant
Weight	Heavier	Lighter
Priority	Durability	Appearance

Two ratings worth knowing

PEI rating measures how much wear a glazed tile can take, from PEI 0 (wall only) up to PEI 5 (heavy commercial floors). For a home floor you generally want PEI 3 or higher. Slip rating(often shown as a COF or an “R” value) tells you how grippy the surface is — important for bathrooms, entryways, and anywhere that gets wet. Wall tiles frequently skip both because they’re never meant to be walked on.

Can you mix them?

Floor tile on a wall: usually fine, and often deliberate — running the floor tile up a shower wall gives a seamless, high-end look. Just remember floor tile is heavier, so use the correct adhesive and make sure the wall can take the load, especially with large-format tile.

Wall tile on a floor:generally a no. A thin, glossy wall tile can crack under furniture or a dropped pan, and a glazed finish turns lethal when wet. If a tile isn’t rated for floors, keep it on the wall.

The math is the same either way

Here’s the reassuring part: whether you’re tiling a floor or a wall, you estimate quantity the same way — total area divided by the coverage of one tile, plus a waste allowance, rounded up to whole boxes. The only practical differences are that you measure walls as height × width and you subtract openings like windows and doors.

Floors: see how to calculate floor tiles, or use the floor tile calculator.
Walls: see how to calculate wall tile, or use the wall tile calculator.

Bottom line

Choose the tile by where it’s going — durability and grip for floors, looks for walls — and check the PEI and slip ratings before you commit. Once you’ve picked the product, the counting is identical, so run your room through the tile calculator and buy with confidence.