The first thing you are going to want to measure is the toilet’s length. This is the space between the bolts of the toilet, where the seat will be attached, and the farthest tip of the toilet seat.
This is why you should measure from the bolts to the tip of the toilet, as the bolts are where the seat will be fixed and will be the furthest back point of the seat.
Simply grab a tape measure, and hold one end around the line that would be made between the two bolts. From there, measure the distance from that point to the farthest tip of the toilet bowl.
On average, most bolt spreads tend to be around 5 ½ inches, and it is likely that your model will align with this standard, making it easier to choose a toilet seat.
Now that you have the general length measured, it’s time to measure the width of the toilet bowl. Take your tape measure and hold one end of the tape at the center of one side.
The center of each side is generally the point of the side that juts out the most. From there, simply pull the tape to find out the distance from the center of each side.
The center of each side is generally the point of the side that juts out the most. From there, simply pull the tape to find out the distance from the center of each side.