Twin Bed Mattress Size. For a big family or lots of pets a king size bed can accommodate a huge crew. Perfect for bunk beds.
A typical single twin or bunk mattresses are 38 width x 75 length. A twin size mattress is usually 38 inches wide and 75 inches long for a total surface area of 2 850 square inches. Beds come in many sizes from the small single twin queen size and go all the way to the massive california king.
Most twins measure approximately 39 inches wide and 75 inches long.
The dimensions can vary slightly by companies with some selling twin size mattresses that are 39 inches wide instead. You d be hard pressed to find a bed that is any smaller than this one other than that of a toddler bed or crib. Bed sizes guide canada usa europe looking for mattress sizes. Beds come in many sizes from the small single twin queen size and go all the way to the massive california king.