How Deep Are Bathroom Sinks?

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When designing a bathroom, the importance of bathroom sinks cannot be overlooked. From quality functionality to design elements, bathroom sinks can transform a bathroom into a luxury space.

When you know what you want, you can pick a sink easily. However, how deep should a bathroom sink be?

With the vast range of sinks, the depth varies based on the model and manufacturer. However, standard round and rectangular bathroom sinks have a depth of 5-8 inches.

Although bathroom sinks are different based on their sizes and shape, the general size tends to fall within the same range. While choosing a bathroom sink, size and usage are crucial.

With the amount of money invested in buying a bathroom sink and expectations to use it for a long time, it’s crucial to make the right choice.

How to choose the size of a bathroom sink


The dimension of a bathroom sink varies between 5-8 inches deep and 19-24 inches wide. Design, usage, and space are pivotal when choosing a bathroom sink.

Needs and type

Of course, you want to choose a bathroom size that will fit your needs. If you hope to use it for numerous purposes, a deeper sink is ideal. For common bathrooms, the sink bowl should be larger. 

The height of the sink is also crucial. Ensure that you are comfortable with the height of the sink.

Space and countertop

When planning on the arrangement of the bathroom, consider the space for the sink. For instance, for small bathrooms, consider a sink that is 5 inches deep and 19 inches wide.

You also have to consider the length of a countertop when installing a sink. If your countertop is 22 inches wide, a 16-inch sink is ideal. Countertops that are more than 24 inches wide will need a larger sink.

Faucet choices

Usually, most bathroom sinks may have one or three holes. Therefore, you need to first determine the sink faucet to ensure that your chosen sink has the correct spacing and faucet holes.

 How to measure bathroom sinks

Imagine shopping for a sink without measuring the size. Well, you may end up making costly and irreversible mistakes. To avoid this, consider measuring the height, depth, width, and length dimensions of a sink. 

Width is measured from side to side, length from front to back, height from top to bottom, and depth from its lowest to bottom point of the sink overflow hole. With these dimensions, you’ll choose the size that will perfectly fit the allotted space. 

For an under-mount sink, the countertop space of the vanity should also be measured. This gives an idea of how large the sink should be. Consider measuring the width and the length of the vanity.

Generally, the vanity countertop can be around 32-36 inches from the ground. A drop-in sink should be the same level as the countertop height. On the other hand, a vessel sink may add around 6 inches in height to the countertop.

This may be uncomfortable if you’re short. Therefore, if you want a vessel sink, go for a shorter vanity cabinet.

Is there a standard size/dimension for a bathroom sink?

With different needs and desires, bathroom sinks vary in size. However, most sinks fall within the same range of sizes.

Commonly, a bathroom sink is between 5-8 inches deep. A round sink ranges between 16-20 inches in diameter. For a rectangular sink, they range between 20-24 inches side to side.

The difference in sizes is due to different models and manufacturers.

Considerations before buying a sink

With the variety of choices of bathroom sinks, getting the right one for you can be overwhelming. 


A bathroom sink can enhance the style of your bathroom. Since it communicates your style, consider a bathroom sink that will complement your house style and architectural elements.

If you want a contemporary or functional look, consider a bathroom sink that will complement your style. However, if you’re not focusing on style, you may choose the most practical option.


Space is a crucial factor when purchasing a bathroom sink. Before choosing a sink, measure your allotted space for the bathroom sink to ensure that you choose one that fits well.


There is a wide array of materials for the bathroom sinks. Some of the materials are marble and vitreous china. The most common material is vitreous china.

When purchasing a bathroom sink, consider a material that suits your preferences and style.


With the different types and styles of bathroom sinks, you can pick one that fits your style, preference, and budget.

Types of sinks and dimensions

Today, there are many available options for bathroom sinks in the market. Standard sink size is ideal for the usual bathroom needs. Small sink size is ideal for washing hands only.

A large sink size, on the other hand, is larger than a small and standard sink size. It’s large enough for doing quick laundry or washing hair.

Some of the bathroom sinks are the under-mount sink, pedestal sink, self-rimming sink, vessel sink, and wall-mount sink.

Undermount sink

They are commonly installed in bathroom countertops and vanities. The standard size of under-mount sinks ranges from 16-24 inches wide.

Its creative design adds a touch of elegance to a space. Unlike other sinks, under-mount sinks have pre-drilled holes, making them an excellent option for faucets.

If you want to add style to your space, you may consider under-mount sinks. They have a contemporary design that may fit almost any style.

If you have a countertop, you will enjoy a straight drop that is streamlined from the countertop to the sink. This makes it easy to clean the countertop. With a wide range of materials, you can get one that fits your style. Its versatility makes it a great choice for a bathroom design.

 Pedestal sink

Its standard size ranges between 16-20 inches in depth and 33-35 inches in height. However, the size depends on the model. Since it doesn’t come with vanity, it’s a great choice for cramped spaces.

With a pedestal sink, you don’t have to worry about cluttered countertops. However, they’re quite pricey as compared to other sink options.

Self-rimming sink

They range between 4-6 inches deep. As compared to other types of sinks, self-rimming sinks are easy to install. They have gained popularity over the years since they were installed on the countertop.

Due to their simple design, they are not prone to leakage problems. They have a single-piece molded design that does not easily leak. They are cheap and can be replaced easily. If you wish to remodel your bathroom after a while, a self-rimming sink is a good option.

With the variety of colors and materials, a self-rimming sink is a great choice for blending with your bathroom design.

Vessel sink

They are stylish sinks that range between 4-7 inches deep. Since it’s not big enough, it’s ideal for washing hands and other minimal activities.

Wall-mount sink

They are 5-10 inches in depth, 19-24 inches in width, 16-23 inches in length. They have a variety of finishes, shapes, and mounting options. The material used is quality and durable.

They have a sleek look that modernizes a bathroom. With so many styles, you can choose a sink that complements your design. Incorporating other accessories adds styles and efficiency.

The Wall-mount sink is easy to clean. They are ideal for small bathrooms since they create an illusion of a larger space.

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