Examples of bed sizes on a dimension chart include a twin, which is 39 by 75 inches, and a full, which is 54 by 75 inches. Another bed size is a queen, which measures 60 by 80 inches.
A twin-size bed accommodate a child or a single adult. A full-size bed is also known as a double or standard size and holds one or two adults. Queen-sized beds are ideal for two adults who don't have the space for a king-size bed. It is also the most popular bed size. A king-size bed is 16 inches wider than a queen-size bed.