About 2" to 4" is the difference between ADA and standard toilets.
ANSI 117.1a 2003, which is determined to be "SAFE HARBOR" for accessible design, requires that an accessible toilet be 17" to 19" in height. Most regular toilets are 14" to 16" in height.
NOTE: if you are looking to modify your existing toilet there are lids that add 2" to the height. My neighbor, who is very tall, has his master bath toilet as an ADA toilet to keep his knees out of his chin... just because he can.
It is correct that ADA toilets are higher but the other difference is in the size of the "goose neck". the ADA has a larger goose neck therefore has a higher flush capacity for the harder bowels which is usually found in the older generation or certain medications.
Some personal opinions from the community:
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Tare as mai vrea si eu sa stiu .....
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