A typical full or double bed is 54 inches wide, 75 inches long and provides enough room for one large adult or two small adults. A queen bed is 60 inches wide and 80 inches long, providing room for two adults.
King-sized beds are 76 inches wide and 80 inches long, while California king-sized beds are 73 inches wide and 84 inches long. There are also twin-sized beds, which are 39 inches wide and 75 inches long, and twin extra-long beds, which are 39 inches wide and 80 inches long. A standard bunk bed is the same size as a standard twin bed.