What Are Twin Mattress Dimensions?
A standard twin mattress size is 38 inches wide by 75 inches long. This compact footprint makes twin mattresses a go‑to choice for smaller rooms, shared bedrooms, or any space where maximizing floor area is important. They offer enough space for a single sleeper while fitting comfortably into rooms as small as 7' x 9'.Compared with larger options like full, queen, or king sizes, a twin bed provides lightweight flexibility, easier room layout options, and lower overall cost—perfect for children, teens, and adults in smaller homes.
