How to Cut Tile with an Angle Grinder (Straight Cuts, Curves, and Notches)

An angle grinder with a diamond blade is one of the most versatile tile-cutting tools available — and one that most DIYers already own. It cuts both ceramic and porcelain tile, handles straight cuts, curved cuts, and notches, and doesn't require water like a wet saw. Here's how to use it safely and effectively.

What You'll Need

• Diamond Multi-Purpose Saw Blades 4.5" (3-Pack) — for cutting marble, quartz, stone, tile, and more
• Angle grinder (4.5" or 5" disc size)
• Safety glasses or face shield
• Hearing protection
• Dust mask (N95 or better) — tile dust contains silica, which is a serious respiratory hazard
• Work gloves
• Clamps and stable work surface
• Pencil or marker for cut lines

Safety First: Tile Dust Is a Serious Hazard

Cutting tile with an angle grinder produces fine silica dust that can cause serious lung disease (silicosis) with repeated exposure. Always:

• Wear an N95 or P100 dust mask — not just a paper dust mask
• Work outdoors or in a well-ventilated area
• Wet the tile surface before cutting to reduce dust (pour water along the cut line)
• Wear safety glasses or a full face shield — tile fragments fly at high speed

How to Cut Tile with an Angle Grinder: Step-by-Step

Step 1: Mark the cut line.
Use a pencil or marker to draw the cut line clearly on the tile surface. For straight cuts, use a straight edge.

Step 2: Secure the tile.
Clamp the tile firmly to a stable work surface. The tile must not move during cutting — movement causes the blade to bind and can crack the tile or kick back the grinder.

Step 3: Install the diamond blade.
Fit a 4.5" diamond blade onto your angle grinder. Make sure it's rated for tile and stone cutting. Check that the blade is securely fastened before starting.

Step 4: Score the cut line first (recommended).
Before making the full cut, make a shallow scoring pass along the cut line at low pressure. This creates a guide groove that keeps the blade on track for the full cut.

Step 5: Make the cut.
Start the grinder and allow it to reach full speed before contacting the tile. Guide the blade along the cut line with steady, even pressure. Let the blade do the work — don't force it. For straight cuts, use a straight edge clamped to the tile as a guide.

Step 6: For curved cuts.
Make a series of straight relief cuts from the edge of the tile to just before the curve line. Then carefully cut along the curve — the relief cuts allow the waste pieces to fall away without binding the blade.

Step 7: Smooth the edge.
Use a rubbing stone or diamond hand pad to smooth any rough edges after cutting.

Angle Grinder vs. Wet Saw for Tile Cutting

• Angle grinder: More versatile (curves, notches, plunge cuts), no water needed, more portable. Produces more dust. Less precise for long straight cuts.
• Wet saw: Cleaner, more precise straight cuts. Requires water. Better for high-volume straight cutting.

For most DIY tile jobs with a mix of straight and curved cuts, an angle grinder is the more practical choice.

Frequently Asked Questions

What diamond blade should I use for cutting tile?
Use a continuous rim diamond blade rated for tile and stone. The 4.5" diamond multi-purpose blades work on ceramic, porcelain, marble, and stone.

Can I cut porcelain tile with an angle grinder?
Yes — a diamond blade cuts porcelain effectively. Porcelain is harder than ceramic, so cutting will be slower and the blade will wear faster.

Do I need water when cutting tile with an angle grinder?
Water isn't required but significantly reduces dust and keeps the blade cooler, extending its life. Wet the cut line before cutting when possible.

How do I cut a circle in tile with an angle grinder?
Mark the circle, then make multiple straight relief cuts from the edge to just inside the circle. Carefully cut around the circle line — the relief cuts allow waste to fall away. Finish with tile nippers to clean up the curve.