Question: what are the dimensions of a queen size mattress in feet?
Answer: Length. The queen-size mattress is 80 inches or 6 feet 8 inches long. It is the same length as the XL twin but longer than regular twin and full-size mattresses, which are 5 inches smaller at 75 inches or 6 feet 3 inches long. The additional length is necessary for taller men and women.