Unlike the standard toilet height, a tall toilet or a right height toilet usually has an additional height of 1-3 inches compared to the standard toilet height.
In compliance with the Americans with Disabilities Act (ADA), a tall toilet or ADA toilet is 17 inches to 19 inches from the floor to the top of the seat compared to a standard height toilet which is 15 inches to 16 inches.
This raised toilet seat that elongated toilets offer are beneficial for those who have trouble sitting or for people who have trouble getting into the squat position.
While this type of toilet seat and chair height is not ideal for small children, the ADA compliant height is the best toilet for tall people, those with certain health issues (e.g., bad knees), and the elderly.