Bathroom Vanity Countertop Dimensions and Design • Home Build Manual

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Bathroom Vanity Countertop Dimensions and Design

Bathroom vanity countertops are often replacing stand-alone sinks, because they make the most of the space. And also for their endless design possibilities, that can make unique, gorgeous bathrooms.

Determining the vanity top design you like and the ideal dimensions for your bathroom won’t be hard. This quick guide will help you with this task.

Read this article first if you still haven’t decided if a vanity top or a stand-alone sink is best for your bathroom.

Page Contents:

Ideal dimensions of a vanity countertop for your bathroom

Standard height of vanity countertops

The most important dimension for a comfortable use is the height. It should be 85cm / 2’10” from the floor, which is a good height for any adult. Taller people lean down a little, and the short ones can reach it smoothly.

Attention! This should be the height of the top of the sink you choose. Read about types of sinks for bathroom vanity tops here.

So that will be the countertop height if you have an undermount or a carved sink.

However, for vessel and drop-in sinks, that have their tops above the counter level, the counter must be lower so that the top of the sink is at the ideal height.

Bathroom Vanity Countertop Dimensions - Standard height — *Vanity tops with undermount sinks should be installed 85cm / 2’10” from the floor.*

Standard depth of vanity countertops

The ideal depth for the vanity top is around 50cm / 1‘8“. But you should check the sink size to make sure it will fit.

If this is too much for your bathroom, no problem. You can make the countertop as deep as possible and choose a curved vessel sink. This model can reach a little further than the countertop.

In the powder rooms below, if the countertops were deeper, the space left for the toilets would‘t be comfortable enough. The chosen vessel sinks have small bases and fit on these narrower countertops, but the tops are large enough.

Bathroom Vanity Countertop Dimensions - Standard depth

Ideal width of vanity countertops

The ideal width of your vanity top depends on the dimensions and layout of your bathroom.

Consider a comfortable width for the shower (minimum 80cm / 2‘8“) and the toilet (minimum 70cm / 2‘4“). You can have the countertop in all the remaining width, making the most of the space to support and store things.

Bathroom Vanity Countertop Dimensions - Ideal width

Where should you place the sink on the vanity countertop?

In small vanity tops, sinks are usually centered on them.

But if you have a large countertop, you can position the sink at the most comfortable point for using it, considering the toilet, the door and the shower positions.

Besides that, if you are having a cabinet under the countertop, you should determine its divisions first and center the sink in one of them. Thus, you won’t need to cut any internal partition to install the sink and the result will look more organized.

Where should you place the sink on the vanity countertop? — This cabinet was divided in 3 parts with different widths and the sink was not centered on the vanity top, but aligned with the pair of doors. As the module of drawers is narrower, the middle module of the cabinet is not centered on the countertop, so it wouldn’t look so good to center the sink. This is an example of the importance of thinking of the cabinet design while planning the countertop.

Bathroom vanity top with or without backsplash and sidesplash?

Backsplash and sidesplash are the vertical pieces installed above the vanity top, glued to the back and side walls (when the countertop touches any side walls).

Their function is to finish the meeting between the countertop and the wall, to prevent water leakage in this gap and to protect that part of the wall against water splashing.

They can be made in the same material of the countertop or with tiles, or any waterproof coating, or even the mirror. Check this article to find out what you prefer.

Bathroom vanity top edge profile types

There is a large variety of edge finishes to be chosen when ordering a countertop. Each option will give it a different look.

Straight angles are recommended for a modern style, while rounded or carved edges look more traditional.

Edge profile options by carolinacustomkitchen.com

Another option is having a mitered edge profile, which is a vertical piece attached under the countertop, in front of it and on the sides, when it does not touch any side wall.

It makes the countertop look more robust, because it looks like the mitered edge profile height is the countertop thickness.

The countertop and the mitered edge profile should be cut at 45 degrees, fitting together seamlessly to give this effect.

If you are having an undermount or drop-in sink, the mitered edge profile may be necessary to hide the sink unfinished outside, if there is no under counter cabinet.

This solution is common for stone countertops, because in order to save material, the stone is usually laminated 2 or 3 cm / 1 inch thick.

Let’s see how different four countertops with different backsplash and edge profile solutions look:

Marble countertop, backsplash and mitered edge profile.

Marble countertop and mitered edge profile. The backsplash was replaced with a tile covering the whole walls.

Marmoglass countertop and backsplash, no mitered edge profile. Without it, you can see the real thickness of the stone. The counter is less robust, giving more prominence to the wooden cabinet.

Marble countertop with no mitered edge profile, also drawing attention to the wooden cabinet. The backsplash was made with a tile covering half wall.

Now you know everything you need to design a vanity countertop just the way you like, with perfect dimensions for your bathroom.

To complete your project, learn how to choose the countertop material and also check the articles on bathroom sinks and faucets.