Toilet Bowl Shape

You can also measure from the rear wall to help determine the best toilet bowl shape for your space since the dimensions of a toilet bowl will differ based on its shape.
Consider an elongated vs round toilet:
- Elongated toilet bowls measure up to 31 inches from the wall behind the toilet to the front of the bowl. Elongated bowls provide greater comfort while seated.
- Round toilet bowls extend up to 28 inches from the wall.
Round bowls require less space, making them a good toilet for small bathrooms. Round bowls require less space, making them a good toilet for small bathrooms.