Tile is one of the few finishes you choose once and live with for a decade or more, so it's worth getting right -- and there are more variables than the showroom lets on: material, size, finish, slip resistance, and grout all change how the tile performs and how the room reads. The good news is that the choice gets simple once you decide in the right order. Start from where the tile is going and what it has to survive, and the material, size, and finish fall into place. Here's how to choose tile without being overwhelmed by the wall of samples.

1. Start From Where It's Going

Before you fall for a color, name the job. A floor tile has to take foot traffic and the occasional dropped pan, so it needs to be hard-wearing and, in a bath or entry, slip-resistant when wet. A wall or backsplash tile carries no traffic, so you have nearly free rein on material and finish -- a delicate glossy or even a real marble that would be a mistake on the floor is fine on the wall. A wet area -- shower floor, tub surround, pool edge -- adds water and bare feet, which raises the bar on slip resistance and water absorption. Sorting the location first immediately rules out half the options and keeps you from putting a pretty-but-wrong tile where it can't perform.

2. Read the Two Ratings That Matter

Two numbers tell you whether a tile can do the job. The PEI rating (1-5) grades surface hardness and wear: PEI 1-2 is wall-only, PEI 3 handles normal residential floors, and PEI 4-5 is for heavy traffic and entries. The slip rating -- often given as a coefficient of friction or a DCOF value -- matters anywhere the floor gets wet; a high-gloss tile that's beautiful and safe on a dry wall becomes an ice rink on a shower floor. Also glance at water absorption: porcelain is rated impervious or near it, which is why it's the default for wet and outdoor areas, while more porous ceramics and stones need sealing or belong somewhere dry. These ratings are printed on the box for a reason -- they're the difference between a tile that lasts and one that fails.

3. Choose the Material

Porcelain: the workhorse. Dense, very low water absorption, hard, and now made in convincing wood-look, stone-look, and concrete-look versions. The safe default for floors, wet areas, and high-traffic spaces.
Ceramic: softer and more porous than porcelain, easier to cut, and usually cheaper. Excellent for walls and backsplashes and fine for low-traffic floors; less suited to heavy use or freezing outdoor conditions.
Natural stone (marble, travertine, slate, limestone): unmatched depth and character, but porous and softer -- it needs sealing, can etch from acids, and shows wear. Best where you'll maintain it and love the patina, like a feature wall or a low-traffic floor.
Glass: luminous and impervious, ideal for backsplashes and accents where its reflectivity adds light. Too slick and prone to chipping for floors.
Cement and encaustic: rich matte color and pattern that make a floor the star, but porous and high-maintenance -- they need sealing and gentle cleaners. A statement choice for someone willing to baby them.

4. Let Size and Format Shape the Room

Tile size changes how big a space feels and how busy it looks. Large-format tiles (and large slabs) mean fewer grout lines, which makes a small room read calmer and larger and a floor feel seamless -- a reliable trick in a compact bath. Small tiles and mosaics add texture and grip (all those grout lines are why mosaics work on shower floors) and suit a feature strip or a detailed backsplash. The shape and layout matter too: a classic subway in a stacked or herringbone set reads very differently from a running bond; a plank-format wood-look porcelain stretches a room in the direction it's laid. Pick a scale that fits the room's size and the look you want, then choose a layout that reinforces it.

5. Pick a Finish for Looks and Safety

Finish is where beauty and practicality meet. Polished and glossy tiles bounce light and look rich, but they show smudges and get slippery wet -- great on a backsplash, risky on a wet floor. Matte finishes hide water spots and footprints and grip better underfoot, which is why they dominate floors. Textured, honed, and structured finishes add slip resistance and a tactile, natural feel, ideal for shower floors and entries. As a rule, save the shine for walls and low-traffic spots and lean matte or textured anywhere feet and water meet.

6. Don't Forget the Grout

Grout is half the finished look and most people decide it last, in a hurry. Color is the big lever: a matching grout makes the tile field read as one seamless surface and calms a busy pattern, while a contrasting grout outlines every tile and turns a simple subway into a graphic statement. Go darker on floors and high-use areas because pale grout shows dirt; reserve crisp white for low-traffic walls. Consider a stain-resistant or epoxy grout in kitchens and showers where staining is a real risk. A thoughtful grout choice can make an inexpensive tile look custom, and a careless one can cheapen a beautiful tile -- it's worth the extra minute at the counter.

Common Tile Mistakes

Choosing by looks before location. A wall-rated or glossy tile on a wet floor is unsafe and wears fast. Name the job first.
Ignoring slip resistance in wet areas. Polished tile on a shower or entry floor is a hazard. Use matte or textured.
Skipping the sealer on stone or cement. Porous tiles stain and etch without it. Seal on schedule or choose porcelain.
Default white grout everywhere. It greys and stains on floors. Match the tile or go darker where it gets used.
Tiny tiles in a small room. All those grout lines can read busy and cramped. Large-format calms a compact space.
Buying exactly the square footage. Cuts and breakage happen. Order roughly ten percent extra and keep spares for repairs.

See Your Tile in the Room Before You Order

Tile is permanent and a full sample board never quite shows how a finish will look across a whole floor or wall in your light. Before you commit, upload a photo of your space and preview different tile looks, colors, and styles against your real room with Room Reveal. For inspiration, browse modern bathroom ideas and scandinavian bathroom ideas, and pair this with our guides to choosing flooring, choosing a kitchen backsplash, and choosing a kitchen countertop.

How to Choose Tile: A Buyer's Guide to Material, Size, Finish, and Where It Goes