The query "how tall is" is incomplete for a specific answer. However, generally, human height is measured as the distance from the bottom of the feet to the top of the head in an erect position. Average adult heights vary by country, for example, adult male height ranges typically around 170-180 cm (5 ft 7 in to 5 ft 11 in) depending on the population studied.

If a specific person's height or a particular object's height is requested, please provide the full context for an accurate answer.