Elongated Toilet Dimensions (with Drawings)

Stacy Randall
by Stacy Randall

There are few things in life as comforting as coming home after a long day and using your own toilet. Renovating bathrooms is notoriously tricky due to the limited space, and choosing a style can make or break the room. While toilet design may seem silly, it’s actually pretty complex, so let’s check out some common elongated toilet dimensions.

Standard elongated toilets are between 28 and 30 inches deep and between 15 and 20 inches wide. The overall height is between 27 and 32 inches, with a chair height of between 15 and 17 inches. Both one-piece and two-piece elongated toilets are similar in size, and you can also opt for chair height toilets with 17 to 19-inch seat heights.

There are tons of toilet types out there: elongated, round, bidet, energy-efficient, upflush, you get the idea. The limited space in bathrooms means that you’ll need to be absolutely confident in the dimensions of your toilet. Below we will explore some elongated toilet dimensions in one-piece and two-piece toilet designs.

Elongated Toilet Dimensions

So what is all this hype about elongated toilets? Well, there’re many different pros and cons, but understanding them can help you choose the best toilet for your home.

When it comes to elongated toilet dimensions, there aren’t any set sizes. Toilets come in various sizes and styles. On average, elongated toilets are 28 to 30 inches deep, 15 to 20 inches wide, and 27 to 32 inches tall overall.

A standard toilet has a seat height of between 15 and 17 inches. You can find variations of these dimensions depending on the style of toilet you choose. In a nutshell, you can break down elongated toilets into two primary categories: one-piece and two-piece.

One-Piece Elongated Toilets

If you purchase a one-piece toilet, you’ll get exactly what it sounds like: one piece. Many consider the one-piece elongated toilet the most contemporary and stylish of all the toilets. The tank and the bowl are combined on this model, which gives them that elegant, sleek look.

This one-piece toilet’s dimensions are as follows: 15” wide, 28.5” tall (overall), 16.5” tall (seat), and 28.5” deep. Additionally, it has a 12” rough-in, which is the distance from the rear wall to the center of the toilet bolts.

This elegant look is due to the lack of gap between the bowl and tank, creating an unbroken continuous line. In interior design, long lines give the illusion of length, which can make even the smallest bathrooms appear spacious.

Pros And Cons Of One-Piece Elongated Toilets

Likely the single greatest pro of having a one-piece toilet is the sleek design. Hailed as the most elegant of the toilet styles, your one-piece toilet will be a show stopper for sure. Their sleek lines set them apart from the two-piece toilets and will make your bathroom look more expensive.

Another pro that you may not have considered is the amount of cleaning involved in your style toilet. Toilets are notorious for being great at hiding grime, especially if your bathroom is frequented by boys with bad aim. Because the one-piece toilets lack that large seam where the tank and bowl meet, cleaning will be easier.

Another con to keep in mind when purchasing a one-piece toilet is the damage protocol. Unlike a two-piece toilet, if a one-piece toilet cracks, you’ll need to replace the whole unit instead of a single part. The one-piece toilet is also likely more expensive than a two-piece model.

The installation is also significantly easier for single-piece toilets because you will have less to assemble. This also will lower the chance of damages or incorrect installation. This can not only save you money but also increase the longevity of your toilet.

Source: Amazon

Two-Piece Elongated Toilets

A two-piece elongated toilet is also relatively self-explanatory as it consists of two parts: the tank and bowl. This can be both a pro and a con at the same time, but for very different reasons.

Two-piece toilets are the most common type of toilet used today for many reasons. Between cost, design, and hygiene, choosing a toilet can feel terribly overwhelming, so why choose the two-piece elongated toilet?

The dimensions of a two-piece elongated toilet can vary from model to model. For this two-piece model, the dimensions are 19” wide, 29.5” tall (overall), 15” tall (seat), and 28.5” deep. It has a rough-in of 12 inches.

Source: Amazon

Pros And Cons Of Two-Piece Elongated Toilets

One of the major benefits of choosing a two-piece elongated toilet is how much cheaper it is to replace parts. For instance, if the tank of your toilet cracks, you would be able to replace just that part instead of the whole unit. This can end up saving you quite a chunk of money in the long run.

Two-piece toilets are also less expensive on average, which could be in part due to their “less desirable” design. But there are still hundreds of two-piece toilet designs that are beautiful and can look wonderful in any bathroom.

As previously discussed, two-piece toilets are sometimes considered to be less stylish than one-piece toilets. This point is, of course, subjective to the viewer, but overall many consider them less contemporary.

Another con is the assembly required for a two-piece toilet. Any time you have a multi-piece appliance, there is a risk of damage to the assembly.

Alternative Elongated Toilet Dimensions

If you are struggling to find a suitable toilet for a small space, consider a compact elongated toilet. This choice offers the smaller size that a round toilet would offer but in the more comfortable elongated style. The smallest dimensions that you will likely find in this style of toilet are 21.5” deep, 14.5” wide, and 18.5” high.

On the flip side, there are lots of larger toilets as well for our taller friends, called chair height toilets. Some people also refer to them as “comfort height toilets,” although Comfort Height is a specific brand mane of chair height toilets.

These toilets have a higher seat than a standard toilet which typically measures around 15”. A chair height toilet will generally measure between 17”-19” from the floor to the top of the seat. These taller styles are also a better choice for those with mobility issues.

Average Toilet Bowl Dimensions

From comfort to hygiene, the two types of toilet bowl shapes, elongated and round, have many pros and cons. While choosing one may seem like simply a design choice, understanding the many ins and outs of toilets will benefit you immensely.

By understanding the benefits and pitfalls of each style of toilet bowl, you feel confident moving forward with your bathroom design. Not everyone has the same toilet requirements, so make sure your choice reflects your needs.

Elongated Toilet Bowls

An elongated toilet is hailed as the most comfortable and stylish design on the market today. The elongated bowl is oval-shaped and extends a few inches further forward than the round-style bowl. This is the most popular design used in modern houses due to its elegant look.

For an elongated toilet seat, the dimensions average at approximately 18.5 inches long and 14 inches wide. Many credit the extra length as making the toilet more hygienic because it gives those with poor aim a larger target. This will help keep your bathroom clean and smell-free and make you a happy camper.

Elongated toilet bowls are also required for ADA use as they are more accessible for those with mobility issues.

Source: Dimensions.com

Round Toilet Bowls

A round bowl is more indicative of an older-style house, although it is still used in modern homes today. Best used for smaller spaces, the round bowl leaves a few extra inches in the front, which helps to conserve space. You will sacrifice a bit of comfortability with this design, but for some, it is not a big deal.

The average dimensions for a round toilet bowl are about 16 inches long and around 14 inches wide. While this may not be the most comfortable choice, it is a great option for smaller spaces.

Elongated Toilet Clearance Dimensions

There are few things as uncomfortable as a toilet that is lacking in legroom. After all, the bathroom should be an especially relaxing and comfortable space in the home.

Do you want to add an elongated toilet or plan to replace your round toilet with an elongated one? Then, you need to know how much space you need. So what are the recommended elongated toilet clearances?

You’ll want to make sure that there is at least 24” between the rim of the bowl and the wall. This will ensure that your knees have enough room while in the seated position. Of course, this is a minimum of 24”, so feel free to have more clearance than two feet.

In regards to the toilet paper roll, it should extend 12 inches past the front rim of the toilet. This is the ideal distance for comfortability and ease of use. The standard height of the toilet roll should be around 30 inches tall for the most comfortable fit.

Source: Dimensions.com

Final Thoughts

The bathroom is one of the most challenging places to manage the space appropriately and still keep things aesthetically pleasing. Typical standard elongated toilets are between 28 and 30 inches deep and around 15 to 20 inches wide. Overall, the height is between 27 and 32 inches, and the seat height is between 15 and 17 inches.

If you prefer a taller seat, you can choose from several styles of chair height toilets. These taller styles have seat heights between 17 and 19 inches.

The perfect porcelain palace is out there for you, and it may just come in the form of an elongated toilet. With thousands of design influencers and HGTV professionals shouting at you with their toilet opinions, choosing can feel overwhelming. The bathroom is a particularly difficult room to renovate, and can also rack up a high bill if not monitored carefully.

Stacy Randall
Stacy Randall

Stacy Randall is a wife, mother, and freelance writer from NOLA that has always had a love for DIY projects, home organization, and making spaces beautiful. Together with her husband, she has been spending the last several years lovingly renovating her grandparent's former home, making it their own and learning a lot about life along the way.

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