A full bed is about 54 inches wide and 75 inches long. This is a good size for teenagers or a single person who is around 5' 5" in height. Taller people may find their feet hanging over the end of the bed. This type of bed is also called a double bed. It is a little over a foot wider than a twin bed.
A queen bed is typically 60 inches wide and 80 inches long. According to the Better Sleep Council, this is the most popular bed size. It allows couples to sleep comfortably. You will typically find this bed in guest rooms and also in master bedrooms. A queen mattress frame requires more support than a full mattress because it is larger.
Teens often feel they have outgrown their twin-size mattress and may prefer a full-size mattress, especially if they move around a lot while sleeping. Couples usually find a queen-size mattress is much more comfortable for two people than a full-size mattress.
Queen beds provide enough room for couples and are less expensive than a king bed. Also, queen beds do not take up very much room so if the master bedroom is small, a queen bed will give the comfort that is needed without sacrificing space.
Queen beds, while providing more room than a full bed, can still be on the small side for some couples. They provide about three inches extra per person than the full. Bedding for queen beds will cost more than for the full as well. Full beds may be good for a young teen, but as your teen continues to grow, he may need a larger bed so investing in a queen might be a good idea.