Updated on July 7th, 2023 at 07:11 pm

When replacing the toilet in your home, there are several things you ought to consider, especially the height and size of the toilet. Though your plumber will help you determine your needs, it doesn’t hurt to understand industry terminologies beforehand.

In the case of chair height vs. comfort height toilets, the focus is on the measurement from the floor to the top. Though some people use these terms differently, they refer to the same product; toilets with heights above 17-inches. They are ideal for tall adults and those with mobility problems. On the flip side, there are standard height toilets with heights below 17-inches and are perfect for average height adults.

Below is an in-depth comparison of the chair, comfort, and standard height toilets.

Chair vs. comfort height toilet

These terms refer to the same toilet type. Chair height is the most commonly used term to refer to toilets that are 17+ inches high. However, comfort height is a term specifically used by Kohler to refer to their chair height toilets.

Toilet seat heights are measured from the rim of the toilet bowl to the floor. According to the Americans with Disabilities Act (ADA), chair heights should be between 17 and 19 inches high. Though the style, features, and designs vary between chair and comfort height toilets; the toilet bowl and seat height are the same.

Note: chair/comfort heights measure between 16 and 18 inches without the toilet seat. Another great way of determining the height is getting the sum of toilet bowl height and toilet seat height.

Because of their height, these toilets appeal to taller people, the handicapped, and the elderly. They are convenient and comfortable hence a popular choice for commercial spaces, guest rooms, and restrooms.

Kohler uses ‘comfort’ for marketing purposes. Other toilet manufacturers like TOTO dub theirs universal height, and other companies still use ADA height or Right height toilet.

Comfort height toilet

image of kohler k-3999-0 highline comfort height two-piece elongated 1.28 gpf toilet - Extra Large Living


  • ADA-compliant height
  • Ideal for tall people or the aging population
  • Ideal for the physical needs of disabled people due to a more natural position
  • Easier to stand and sit from
  • Doesn’t need toilet raisers


  • They are heavy
  • Cannot fit in tight spaces
  • Uncomfortable for short people and kids where their feet dangle

Standard height toilet

image of woodbridge cotton white t-0019 toilet - Extra Large Living

Standard (regular) height toilets were made right from the innovation of flushing toilets in the 19th century. These measure between 15 and 16 inches high with toilet seats and between 14 and 15 inches without the seat. Being a couple of inches shorter than comfort height toilet, they are perfect for kids and shorter adults.

Using these seats, you can put your foot down comfortably. Also, they provide natural hip positioning, which helps with bowel movements.


  • Perfect for short and average height people and kids
  • Natural user position
  • Lighter
  • Fit in tight spots


  • Strenuous to individuals and the aged
  • Not an ADA-compliant toilet

Chair heights vs. standard heights

image of a comfort height and standard height toilet - AEC Info


Chair heights are more common than standard toilets since they serve a wider population than standard toilets. They are common in commercial establishments, while standard height toilets are common in residential homes depending on a homeowner’s needs.


According to the exception clause in the ADA, toilet seats for persons living with disability should be two or three inches higher than standard height toilets. If you have a standard height toilet in your home and later need extra height, you can purchase toilet seat risers.


Height is the differentiating factor between these toilets. Standard and comfort height toilets from the same brand with the same specifications and features have the same design. Moreover, they come in different colours and one or two-piece designs. Usually, one-piece designs are often more expensive than two-piece toilets.


Comfort height toilets cost slightly more than standard height toilets. Assuming the two toilets have similar design (round or elongated bowl) features and are from the same manufacturer, the price difference may be $100. For someone with physical challenges or who prefers sitting high, consider incurring the extra $100 for added convenience.


The squatting position is the most natural position to assume when defecating. Standard height toilets are the closest we get to squatting in modern times. Because they position the hips below the knees, they help enhance bowel movements and prevent hemorrhoids and constipation.

On the flip side, comfort heights are taller and provide 90-degree seating positions. Health experts claim the chair-like posture restricts bowel movements, they are great for the back and knees.


Installation of a comfort height toilet and a standard toilet is similar. Moreover, plumbers charge the same for the installation. However, standard height toilets are ideal if you want the toilet installed in a tight spot, say under a shelf.

Bottom line

Both comfort/chair height toilets and standard toilets are quality and durable. However, the option you choose depends on your needs.

Choose chair height toilets if:

  • You need ADA-compliant toilets
  • Tall folks will use it
  • Elderly and disabled people will use it
  • You have bad knees
  • You are a person living with a disability

Choose standard toilets if:

  • It’ll be used by shorter people and kids
  • You have a problem with constipation
  • You’ll install it in a tight space

If you already have a standard seat toilet, but need extra height without getting a new toilet, consider purchasing a raised toilet seat.

What are raised toilet seats?

A raised toilet seat is perfect for anyone who wants a little help getting up and down from the toilet, or who has difficulty squatting. Plus, it’s easy to install – simply place it on top of your regular toilet seat and you’re good to go!

If you’re finding it harder and harder to squat low to use the toilet, a raised toilet seat may be just what you need. This handy device provides extra height, so you can go about your business with ease.

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