Do toilet seats come in different sizes?

Toilet Seats Hanging on the Wall

Do toilet seats come in different sizes? The answer is, toilet seats are available in two shapes— round and elongated. Round and elongated toilet seats do have sizes and can be sized to fit your toilet bowl with a little effort. If you want accurate sizing don’t eyeball it and guess. Guessing is how you get the wrong size, a toilet seat you can’t take back after purchase, and regret. You’ll need a tape measure to accurately do this, which you can find at your local hardware store.

How to measure the toilet bowl to find out the toilet seat type

  1. Take off the old toilet seat. Get help with this or do it yourself.
  2. Get a measuring tape, paper, and a pencil or pen.
  3. Start at the center of the two mounting holes and extend the measuring tape to the very front of the bowl.
  4. Write down the length of the toilet bowl.
  5. If the toilet bowl is 16.5-17 inches then you will need to get a round toilet seat.
  6. If the toilet bowl 18.5-19 inches then you will need to purchase an elongated toilet seat.
  7. FYI, both toilet seats have a width of 14 to 14.5 inches.
  8. Mr. Rooter suggests you write down the width, or the amount of space across the bowl at it’s widest part, in order to cross-check the fit of the new toilet seat. Make sure there is enough space to sit on and make sure it’s not too small or thin.

What are my other toilet seat sizing options?

For children. There are also sizing options for toddler sized toilet seats. These can vary from a little more than 14, 15, and 16 inches in length. This is great for toddlers who are learning to use the potty and parents who are teaching their toddlers. Seats that fit toddlers are great for their safety because it helps prevent them from falling into the toilet, and has a fit that will keep their hands away from the inside of the bowl.

Extended sizing. There are also extended sized toilet seats for taller and larger toilet users, as well as anyone who wants a more roomy and comfortable toilet seat. The lengths and widths of these toilets are extended in size. They can be adjusted from 17 inches, up to almost 20 inches in length. Also great for use by a variety of sized behinds, as well as women who are pregnant, and anyone who has ailments that require a larger seat.

Room to grow and customization. Please note that some people prefer to have more toilet seat space and will order up in size if they can get it customized. Be warned that these sizes are about half an inch bigger than the average round or elongated toilet seats, and other sizes can be found. This is great if you have a larger bathroom and not suggested for homes with small or oddly shaped bathrooms. The only drawback is that it will cost you a lot more money. These are great for women who are pregnant, and people who are overweight or very tall.

Recover and feel better. If you have aches and pains, have had recent surgery, are pregnant, or even have back problems or sciatica, raised toilet seats and padded toilet seats are a good option for you. These toilet seats have the same lengths as standard toilet seats, but are very thick and can even have padding and propped up support if you need it. There are also warming and cleaning toilet seats that will help people with aches and pains from age or injury.

Other countries. If you are in another country like the UK, you will want to take 3 measurements like Victoria Plum’s site mentions. You’ll want to measure the length, width, and height of the toilet. You will also want to take into account the shape of your toilet. Some European toilets and toilet seats may have a D-shape, square shape, traditional rounded nose shape, or a traditional pointed nose shape to them. Research and purchase accordingly.

Tips for getting the best size toilet seat for your bathroom

  1. Determine if you have a small restroom, a roomy one, or a uniquely shaped restroom.
  2. If you don’t have much space or you have an oddly shaped restroom, you will want to get a space-saving round toilet seat.
  3. If you have space to spare, then you’ll want to go with an elongated toilet seat.
  4. Determine whether small children and the elderly would be able to sit on the toilet comfortably.
  5. Children can balance better on smaller round toilets seats compared to elongated ones.
  6. Elongated toilet seats may make your child’s sitting position unbalanced and toward the inside of the toilet.
  7. Seniors may want to have seats that are raised or padded for extra comfort and easy up and down.
  8. If your toilet is by a door, be careful which kind of toilet seat you buy. If you get the elongated seat, you may risk the door and people bumping into it. This can lead to bruises for the bathroom visitor, broken or cracked ceramic for the toilet, and scratches for your bathroom door.


Toilet seats come in two standard sizes, round and elongated. They can also be extended, customized, raised, padded, and can even come in kid-appropriate sizes. It’s up to you to decide what your most optimal toilet seat looks and feels like, and the reasons why you’ll want a specific type of toilet seat over other types. When you make this clear, you’ll be on your way to finding a toilet seat that will be worth seating your family, friends, and yourself for the 30 minutes a day we spend using the restroom. Life’s too short for improperly sized and uncomfortable toilet seats. Keep reading for better ways to increase your overall toilet seat knowledge and make going to the bathroom a more enjoyable experience.

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