How to Cut Porcelain Tiles (and the Tools to Use)

Porcelain is a top-tier choice for kitchens and bathroom floors because it is tough, water-resistant, and looks incredible. However, that durability comes with a price. Knowing how to cut porcelain tile without cracking it is a challenge for even the most seasoned DIYers.

If you don’t use the right techniques, you will end up with a pile of expensive, broken shards. We explain the best tools for the job and how to get that perfect cut every time.

Porcelain Vs. Ceramic Tiles

Before we start cutting, it is important to understand what you are working with. Porcelain is technically a form of ceramic, but it is not the same beast.

Porcelain is made from finer clay particles and fired at much higher temperatures. This makes it denser, heavier, and virtually waterproof.

While this is great for your bathroom floor, it makes the material brittle. Ceramic is softer and easier to slice, whereas porcelain demands diamond-tough tools. If you try to cut porcelain like standard ceramic, it will likely shatter.

Can You Cut Porcelain Tiles?

Yes, you can absolutely cut porcelain tiles. However, you cannot rush the process.

Because the material is so hard, it is prone to chipping along the cut line. You need patience, a steady hand, and the right equipment.

Best Tools to Cut Porcelain Tile

There isn’t one single “best” tool because it depends on the cut you need to make. Are you ripping a whole row of tiles? You need a wet saw. Are you cutting a curve around a toilet flange? You need a grinder or Dremel.

Here is a breakdown of the best options for your project:

Dremel

A Dremel (or rotary tool) is your best friend for intricate detail work. If you need to cut a circle for a pipe or smooth out a rough edge, this is the tool to grab. It spins at high speeds and uses small diamond bits to grind away the material.

It is lightweight and easy to control. However, do not try to cut a straight line across a large tile with this; it will take forever and look uneven.

Manual Tile Cutter

For straight cuts on floor tiles, a manual snap cutter is a classic choice. It works by scoring the surface glaze and then snapping the tile along that weak point.

It is quiet, requires no electricity, and creates no dust.

However, cheap snap cutters often struggle with thick porcelain. You need a high-quality model with a sharp scoring wheel to get a clean break on this dense material. It is strictly for straight lines; you cannot cut angles or curves.

Angle Grinder

If you need to make L-cuts (like around a cabinet corner) or odd angles, an angle grinder is the way to go. It is powerful and fast.

You must equip it with a diamond tile blade. The downside is that it is messy. Grinders create a massive cloud of fine silica dust, which is hazardous to breathe. You should always use this tool outside while wearing a respirator.

It is also harder to get a perfectly straight edge compared to a wet saw or snap cutter.

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Circular Saw

You can turn your standard circular saw into a tile cutter by swapping the wood blade for a diamond masonry blade, like the DiaPro Diamond Tile Blade.

This is a good workaround if you already own the saw and only have a few cuts to make. It offers more stability than a free-hand angle grinder. However, like the grinder, it creates a lot of dust and heat. You will need to be careful not to overheat the tile or the blade.

Wet Saw

The wet saw is the gold standard for cutting porcelain. It looks like a table saw but uses a continuous stream of water to cool the blade and the tile.

The water lubricates the cut, resulting in the smoothest edges possible with minimal chipping. It also suppresses dangerous dust.

If you are tiling a whole room, rent or buy a wet saw. It saves time and reduces waste. The only downsides are the setup time and the water spray mess.

Tile Nippers

Tile nippers look like a pair of pliers with sharp carbide jaws. You use them to “nibble” away small bits of tile.

They are essential for making irregular curves, such as fitting a tile around a round toilet drain. The edge will be jagged, so nippers are best used for cuts that will be covered by a flange or escutcheon plate.

These tile nippers by ABN are affordable and durable enough for most home projects.

Here is a quick comparison to help you decide:

How to Cut Porcelain Tile by Hand

Ready to make some dust? Here are the specific techniques for each tool to ensure you get a clean cut without ruining your material.

With a Dremel

A Dremel is perfect for precision. It’s not for speed; it’s for accuracy.

1. Prep the tile: Apply masking tape over the area you plan to cut. This protects the glaze and gives you a surface to mark on.
2. Mark and clamp: Draw your shape on the tape and clamp the tile to a workbench.
3. Start the cut: Turn the Dremel on high speed. Hold it at a 45-degree angle to score the surface initially.
4. Cut through: Slowly bring the tool to a 90-degree angle and gently push through the tile. Let the speed of the tool do the work; do not press hard.
5. Smooth it out: Use a grinding stone attachment to smooth any rough edges after the cut is complete.

With a Manual Tile Cutter

The “score and snap” method is fast, but technique is everything.

1. Mark the line: Use a pencil to mark your cut points at the top and bottom of the tile.
2. Position the tile: Place the tile firmly against the top fence of the cutter. Line up the cutting wheel with your marks.
3. Score once: This is critical. Push the handle down gently and slide it forward in one continuous, firm motion. Do not score back and forth; this creates a jagged break. You want one clean scratch.
4. Snap it: Position the breaker bar (the foot) on top of the tile. Apply gentle, increasing pressure on the handle until the tile pops.

With an Angle Grinder

This method requires a steady hand and safety gear. Wear goggles and a mask.

1. Blade check: Ensure you have a continuous rim diamond blade installed.
2. Secure the tile: Clamp the tile so the section you are cutting hangs off the edge of the workbench.
3. Score the surface: Turn on the grinder and lightly score the surface of the tile along your line. Don’t cut all the way through yet.
4. The full cut: Go back over the line, cutting deeper with each pass. This reduces the heat buildup that causes cracking.
5. Back-cutting (Optional): For a cleaner cut, score the front, flip the tile, and finish the cut from the back.

With a Circular Saw

This is similar to using a grinder but with a guide plate for stability.

1. Set the depth: Adjust your blade depth so it cuts just slightly deeper than the thickness of the tile.
2. Clamp a guide: Clamp a straight edge or piece of wood to the tile to guide the saw base. This ensures a straight line.
3. Cut slowly: Turn on the saw and let it reach full speed. Push the saw slowly through the tile. If you hear the motor straining, slow down.
4. Manage dust: Ideally, have a helper hold a shop vac hose near the blade to catch the dust.

With a Wet Saw

This is the professional method and yields the best results.

1. Fill the reservoir: Make sure the water tray is full. The pump needs to be fully submerged.
2. Align the fence: Set the rip fence to your desired measurement.
3. Turn it on: Power up the saw and wait for the water to start flowing over the blade.
4. Feed the tile: Push the tile slowly into the blade. Keep your hands clear.
5. Finish the cut: Push the tile all the way past the blade. Do not pull the tile back while the blade is spinning, as this can chip the edge.

With Tile Nippers

Use nippers for “nibbling” away at curves.

1. Mark the area: Draw the curve you need to remove.
2. Score the line: If possible, use a glass cutter to score the curved line. This acts as a barrier to stop cracks from traveling further into the tile.
3. Nip away: Start at the edge and take small bites, less than 1/8th of an inch at a time. If you try to bite off a big chunk, the tile will crack.
4. Sand it: The edge will be sharp and jagged, so smooth it down with a rubbing stone or sandpaper.

How to Cut Porcelain Tiles Without Chipping

Porcelain is notorious for surface chipping, especially on the glazed side. Here are three pro tips to keep your edges clean:

The Masking Tape Trick

Place a strip of blue painter’s tape or masking tape over your cut line. Mark your line on top of the tape and cut right through it. The tape holds the glaze together and prevents the blade from splintering the surface.

Notch the End First

If you are using a wet saw or grinder, make a small cut (about one inch) on the back end of the cut line first. Then, go back to the front and make the full cut. This prevents the “blowout” chip that often happens when the blade exits the tile.

Check Your Blade

A dull blade is the number one cause of chipped tiles. If you have to force the tile into the saw, your blade is dull. A fresh diamond blade glides through porcelain with very little pressure.

FAQs

Does Porcelain Tile Chip Easily When Cutting?

Yes, porcelain is very hard and brittle, which makes the glazed surface prone to chipping during cuts. Using a sharp diamond blade and water for cooling significantly reduces chipping.

Can You Cut Porcelain Tile Dry?

You can cut it dry with an angle grinder or manual cutter, but it is not recommended for power saws. Dry cutting creates excessive heat (which breaks tiles) and dangerous silica dust. Wet cutting is safer and produces a cleaner edge.

Is Porcelain Harder To Cut Than Ceramic?

Yes, porcelain is much denser and harder than standard ceramic tile. You generally cannot use standard carbide blades on porcelain; you must use diamond-coated blades to get through the material.

Making the Cut

Installing porcelain tile is an upgrade that adds serious value to your home. While the material is unforgiving, using the right tools makes the process manageable. Whether you rent a wet saw for a big job or use a grinder for a quick repair, patience is your best asset. Take your time, watch your fingers, and you will have a professional-looking floor in no time.