A standard single bed is 3 feet wide and 6 feet 3 inches long (91 x 190). This is the most common bed size for children, kids beds and bunk beds. A small double bed refers to a 4 feet wide, 6 feet 3 inches long mattress (122 x 190 cm).What size bed is smaller than a twin bed?
What bed is smaller than a twin bed? Double/Full beds are 15" wider than a twin, but if two share the bed, each has only 27" of personal space-much less than a twin! A Queen bed is 6" wider than a double bed, allowing more room for each person, but still 9" less than a twin bed.