Can You Cut A Bathroom Vanity Top? (Helpful Tips!)

Bathroom vanity tops are an important aesthetic addition to every modern bathroom. Countertops are often large custom affairs designed to match a particular space, so professionals often install them.

But the bathroom vanity countertops are usually small enough for enthusiastic DIYers to install them themselves. Thankfully, most vanity tops are custom made, leaving you with many opportunities to cut and make changes that add additional functionalities to your bathroom vanity countertop.  

The bathroom vanity top is cuttable using an angle grinder and a masonry blade. You can use a jigsaw or circular saw for a flat bathroom vanity piece. Cutting a bathroom vanity top is a messy activity, so it’s advisable you do its outdoor wearing goggles and a particle mask or respirator to protect you from dust. 

Fortunately, bathroom vanity tops don’t go through similar wear-and-tear as their kitchen countertops; after all, you don’t have to use a rolling pin and hot pot on your bathroom vanity top.

This leaves you with plenty of design options and room for renovation and cutting in the future. The vanity top in your bathroom should be gorgeous, durable, stain-resistant, easy to clean, and determines the overall ambiance of your bathroom. Your bathroom vanity top is a large visual foundation that compliments everything in your bathroom.

Therefore, it’s important you get the functionality, shape, size, and design right, and when you don’t, you can easily bring out your cutting instrument to cut to desired shape and size that can withstand the morning rush and afternoon wind-down.

Cut A Bathroom Vanity Top

Are all bathroom vanity tops cuttable? 

 All bathroom vanity tops are cuttable. But you have to execute the cutting with cutting tools that are made from carbide and have a minimum of 40 teeth to effectively and accurately cut the edge.

You can cut the bathroom vanity top like the Onyx shower panels using standard woodcutting saws. A woodcutting saw is a fine blade attached to a circular saw to smoothly cut vanity tops’ weight and length.

However, cutting a cultured marble vanity top can be challenging because chips and scratches easily. Therefore, you need to use a masonry blade and a scratch-free work surface to successfully cut a cultured marble vanity top.

What are the standard sizes for vanity tops?

 The bathroom vanity tops are designed to match the size of the vanity cabinets in the bathroom, with a little overhang at the sides and front.

The standard widths size of a bathroom vanity cabinet ranges between 24 to 72 inches, and the standard depth from front to back ranges between 20 to 21 inches. The standard size of a bathroom vanity base cabinets for a small room is 17 inches and 23 inches for a standard-sized bedroom.

The size of your vanity top ultimately determines the final result of your bathroom remodels. Since vanity tops don’t come in one-size-fits-all, it’s important you take the right measurement to make the vanity top fit perfectly.  

How to cut a bathroom vanity top correctly: 

Step 1

Cutting a bathroom vanity top is a messy job. Therefore, you have to move the work outside and protect yourself by wearing goggles and a particle mask or respirator to protect you from dust. 

Step 2.

Use a new angle grinder with a masonry blade, jigsaw, or circular saw to make a nice clean cut. 

Step 3. 

Always cut the face first to avoid a scratch on the vanity top when the piece falls off. 

Step 4.

The breaking point is sometimes rough because the piece, in most cases, doesn’t break off completely, so you have to nicely and slowly smoothen the brake-off point with a grinder.  

Cutting off the sides of the bathroom vanity top may destabilize the sink basin from the plumbing, so you may have to change the drain and supply-line configurations to enable the sink and vanity top to fit perfectly. 

What is stone effects vanity top made of?

The stone on the vanity top is a blend of crushed natural stone, usually quartz and synthetic resins.

The natural stone in a bathroom vanity top is around 95%, while the synthetic resins are around 5%. The vanity top can be tinted in different colors and are nonporous and resistant to stain and scratch.

How do you measure for a bathroom vanity top?

The measurement of a bathroom vanity top should start from the edge of the top to the back. You can also get the correct measurement by adding an inch to the depth measurement of the top-less cabinet.

An average bathroom vanity size is 21D inches; adding an inch depth measurement of the top-less cabinet would equal a 22D-inch top.

Do you put baseboards behind a bathroom vanity?

Most bathroom vanities are designed to enable the plumbing pipes to emerge from the back wall for future plumbing repairs. Therefore, no modification is needed. However, you can choose to put a baseboard behind the bathroom vanity.

Start the installation by placing the bathroom vanity against the baseboard and follow up from there.

Does the bathroom vanity need to be flush with the wall?

Yes, they do. It is important to make sure the wall is straight with no space in-between the vanity and the wall.

For bathroom vanity that doesn’t have legs, use the shims under the base to make sure the vanity on each side is straight and add a backsplash if needed.

Is a marble vanity top easy to cut? 

The marble vanity tops are made from quart stones and are easy to cut. You can cut a marble vanity top with a diamond blade circular saw to wet-cut your marble.

Make sure you only cut your bathroom vanity top outside and protect the slab by placing it on thick rigid foam.

Can you cut a bathroom vanity top with a jigsaw? 

Several tools can be used to cut the bathroom vanity top, including a jigsaw and circular saw. While jigsaw is best for small cutouts, the circular saw is perfect for lengthy sections. You also need to use a carbide or diamond blade for a perfect cut.


Remodeling your bathroom vanity top is a simple task. You just have to know the right cutting instrument to get a smooth cut and the exact length you’re cutting off by doing the calculations before cutting.

However, it is important to do all the cutting outside—most bathroom vanity tops are made with cultured marble material to give off a fiberglass reek and dust. Therefore, you have to wear goggles and a particle mask or respirator to protect yourself.