Full-size beds are the perfect size for small spaces, teens or single sleepers. If you're considering buying a full-size mattress, here's what you should know.

A full-size bed, aka double bed, is 54 inches wide and 75 inches long (approximately 137 x 191cm). That makes it smaller than a queen bed size (60 x 80 inches; approximately 152 x 203cm), and much ...

A queen size is the second-biggest mattress size after a king-size bed. It is about six inches wider and six inches longer than a full-size to create a ton more space. It does fall short of a king ...