To determine your toilet seat size, you'll need to measure the distance between the mounting bolts on the back of the toilet.
This measurement will give you the center-to-center distance between the bolts, which is the standard measurement used for toilet seats.
Most toilet seats come in two sizes, round and square, so you'll also need to measure the length of the toilet seat from the center of the seat mounting hole to the front edge of the toilet to determine which size toilet seat you need.
Once you have these measurements, you can choose the correct size toilet seat for your toilet.
