What size toilet seat do I need?

This post contains affiliate links. As an amazon associate, I earn affiliate commission, from qualifying purchases.

Do you find yourself struggling to fit on the toilet because of your size? The solution is to know what size toilet seat do I need?

If you are reading this, chances are you have encountered the unfortunate situation of not finding what size toilet seat do I need?. It is an issue faced by many people, and the solution can be rather tricky. Luckily for you, we’ve compiled all of the information you need to find your perfect size toilet seat.

What is the Best Size Toilet Seat For You?

Standard size toilet seats are 16 inches wide. If you cannot fit on a standard seat and sit sideways, then your best bet is the 18-inch seat that will be more comfortable for you. The 20-inch seat will also work if it fits in your bathroom space.

If you measure wider than 26 inches around the widest part of your hips or buttocks, then the 24-inch heavy-duty, soft, close elongated toilet seat may better suit you. These seats will provide excellent comfort without taking up too much room in small bathrooms.

For people who require special needs such as arthritis or an injury that prevents them from bending down low enough to use a regular height toilet, then the ADA (American Disability Act) approved toilet seat is a good choice.

If you want to have an adjustable height, the American Standard Cadet Plus or TOTO’s elongated toilets have excellent functionality for any user.

For taller than average people and require more room to sit comfortably without their feet touching from underneath them, consider going with something like Kohler’s 18-inch wide toilet bowl. It provides excellent comfort and space while also not taking up too much room in smaller bathrooms.

How to measure a toilet seat to find the right one for you?

One of the most important things to do when remodeling your bathroom is to find a toilet seat that will fit correctly. There are many different types and sizes of seats, so it is best to measure your current seat before going shopping. The right size can be hard to determine if you don’t know how to measure it correctly! Here, we’ll teach you how to measure a toilet seat for an easy purchase decision.

To take measurements for a toilet seat, you will need to measure the width of your current toilet and find out how high it is. The height measurement includes the lid as well, so make sure you know which part of the bowel needs to be measured if there are two heights listed on your toilet’s box or in its manual.

Measurements should always include any bumps that may stick up from the rim, such as bumpers for small children when they use them. If needed, cover these with paper first before measuring them with an adhesive tape measurer just like you would anything else!

We recommend taking measurements over a soft surface like carpeting because hard surfaces can leave indentations in the floor where water might puddle during installation. If all goes smoothly, you’ll have a new toilet seat installed before you know it!

Common mistakes people make when buying a new toilet seat

If you’re looking to buy a new toilet seat, there are a few things that you should know before going into the store. The first thing is that not all toilets have the same shape or size. You can get creative with this by buying an adjustable one, but know how much room you have in your bathroom to install beforehand! Another common mistake people make when purchasing a new toilet seat is forgetting about installation costs. Some stores offer free installations on their products, whereas others charge extra – so always read the fine print!

How do I know my toilet seat size?

The first thing you need to know about toilet seat sizes is that the ones made for children are different from those meant for adults. Moreover, toilet seats for a heavy person have different sizes. The adult size is typically 15 inches in diameter, while a child would be 12 inches. So if you’re not sure of what size your toilet seat should be, measure it!

Steps to measure your toilet seat size:

  • Measure the diameter of the inside edge of the rim.
  • Calculate 15 inches for adults or 12 inches for children’s sizes.
  • Divide by two (or three) to get the radius and circumference. You’ll need this information in a minute!
  • Round up/down if necessary, so you have an even number for your calculations later on. It may be helpful when you’re choosing between different styles that are close together but not quite precisely what you want. For example, 14″ vs 13″. Starting with equal numbers will eliminate any confusion about which one is best suited for your needs! The same goes for the height; it’s convenient to use an even number for many reasons!
  • Determine your toilet seat size by multiplying the radius and circumference. If you have one radius, that is enough to determine all measurements at once.
  • Convert decimal values into fractions or percentages if necessary (for example: 12″ x 23″).


Q. Do all toilet seats fit the same?

  1. These days, toilet seats come in all shapes and sizes. Although the actual seat size doesn’t vary from brand to brand, you should always measure both your old seat and your new one so that they’re compatible with each other.

Q. Do you measure a toilet seat for replacement?

  1. You should measure a bathroom seat if you’re worried it’s too big or too small for your toilet. The easy way to get an accurate measurement is by laying the new seat on top of the old one and tracing with a pen where they overlap.

Q. What are the two sizes of toilet seats?

  1. There are two different size toilets. The standard toilet is a 14-inch seat diameter, and the comfort height toilet has a 16-inch seat diameter.


It is a question we get all the time: what size toilet seat do I need? And it’s not surprising why. Who wants to buy something they know nothing about? But with our help, you will have an answer that makes sense for your home within seconds! Follow these tips and tricks so you can find what size toilet seat best fits your needs without any hassle or guesswork involved. And please let us know if there are other questions you want to be answered in this post–we’re always happy to chat with new readers on how to make their homes more comfortable!

Leave a Comment