How To Buy the Right Size Toilet Seat

Looking to purchase a new toilet seat or replace an existing one? Want to find the perfect matching toilet seat for your commode?

In case, you don’t get the right size one, it won’t work. Sounds complicated?

Relax! We’re here to help you. Read our article on “how to buy the right size toilet and toilet seat”, definitely you’ll find the right way to buy the right size best toilet seat.

Read on!

How to Buy the Right Size Toilet Seat- The Guidelines and Much More

How to Buy the Right Size Toilet Seat

There are many factors to consider when you’re going to buy a new or replacement toilet seat. Toilet seat size is one of them. In fact, toilet seat size is one of the main considerations when buying the toilet seat.

About The Toilet Seat

Most toilets don’t include the seat and you need to buy it in separate pieces. Consider the following things:

  • The toilet seat shape depends upon the bowl shape (elongated or round).
  • Slow-close toilet seat is quite as well as safe to use.
  • Toilet seats are available in plastic, real wood, cushioned vinyl, or molded wood composition.

Buying the Right Size Toilet Seat- The Problem& It’s Solution

The Problem:We’ve found that when it’s time to change the toilet seat, some people spend hours after hours finding the exact size.

It’s not surprising when you see consumer coming to shop with toilet seat charts and drawings.

Finally, you’ve bought one and tried a lot to find it.Right?

What do you feel, if you discovered that you bought the wrong size?


Wait! The problem is you don’t know about measuring toilet seat.

The solution: Very Simple! Yes, just follow the steps below.

Step 1: Determine the Shape of the Toilet Bowl You Have

Toilet seats come in mainly two shapes:

  • Round shape toilet seats
  • Elongated/ oblong shape toilet seats

Round Shape: These shapes are still standard in most homes. Designed to fit space-saving round-front toilets. 

Elongated Shape: These shapes are becoming more popular. They have a long oval shape. 

Before deciding to buy a toilet seat, it’s important to find out if you have an elongated or round shape bowl so that you can buy accordingly.


The basic sizes and shapes of toilet seats are alike, but there may have some seats that don’t follow the usual toilet shape and may have a few more curves. In these cases, manufacturers offer specially made toilet seat and you may place an order to your supplier in order to get the matching seat.

Step 2: Measure Your Existing Seat and Toilet Bowl


You’ll end up losing your money if you fail to correctly measure the size when buying a toilet seat. Follow the basic guidelines below to learn how to correctly measure toilet seat:

Things You’ll Need

  • Measuring tape
  • A pen
  • A paper

Points to Measure

  • Post hole to post hole
  • ​Bowl width
  • ​The center front of the toilet bowl to the center of the hinges

First, measure from the center of the right bolt hole to the center of the left bolt hole located on the back of the seat area. Avoid measuring the holes.

Typical bolt spread: 155mm or 5-1/2-inch

Second, turn the seat over (if you’re going to replace the old one) and measure the broadest width of the toilet bowl. Avoid measuring the top of the seat.

Typical width: 14 to 14-1/2 inches

Third, hold the measuring tape and reach out to the center front of the bowl or seat. Then, stretch the tape to the center of the hinges between the bolt holes.

But how will you identify whether it is a rounded or elongated toilet?


  • If the measurement is between 18 to 19 inches, you have an elongated toilet
  • If the measurement is between 16 to 17 inches, you have a round front toilet.

Third,record the measurements.


Your toilet seat shape must need to match the shape of the toilet bowl, in order to create comfortable and snug fit.

Hope, our discussion, and step-by-step guidelines help you to take the exact measurements of your toilet bowl and thus help you to buy the right size toilet seat. Protection Status
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