Generally the “comfort” label is applied to extra high toilets that are 17 to 19 inches high to the bowl. If you see that a toilet is a “standard” height, that means it’s around 15 inches. There’s no absolute perfect height for everyone - people have different heights and weights, after all. But higher toilets are easier for people to get on and off, especially if they have older joints or injuries, which is why they’re a popular choice.