How long is a twin bed?

A twin bed is 75 inches long. The twin bed is often used in a child's bedroom, in smaller rooms or as a bunk bed. An extra-long twin bed offers an additional 5 inches in length to accommodate taller frames.

The width of the twin bed and extra-long twin bed is 39 inches. Because of its smaller size, it is often less expensive to purchase bedding for a twin bed. Extra-long twin beds are less common, so owners may have difficulty finding bedding. Extra-long twin beds are flexible. They can be used alone or pushed together to match the dimensions of a king-sized bed.