Posted 05/07/17 20" inch toilet Toilet Height Matters: introducing 20 inch bowl designed by the Convenient Height Co. Convenient Height toilets are ranked the tallest consumer market (mass production) residential toilets in the world. Our elongated 20 inch height toilet bowl is compatible with any standard elongated toilet seat or matching accessories. Total height floor to top of a regular toilet seat is 21 inches which successfully exceeds ADA toilet height requirements. Convenient Height beats any other toilet bowl height by 3 inches (7.6cm).