Standard Width & Length of Twin Beds

Twin Beds

• A twin mattress is 39 inches wide and 75 inches long. Converted to feet, a twin mattress is just over three feet wide (3.25 feet) and just over six feet long (6.25). The twin is one of the most common types of mattresses, so finding linens and other is never a problem. Twin beds are useful for most average-size adults and are a staple choice for children and guest rooms.

Use Considerations

• Twin mattresses are more versatile than other mattresses. The compact size makes for easy transportation; generally, one person can handle moving a twin mattress on his own. Further, the twin bed isn't limited to just being a bed. Coast to Coast Mattress, a mattress company out of Maryland, suggests using a twin mattress as a day-bed for use in a den or an office. Doing so adds multiple functions to the room: It works as a place to sit or lounge when the room is used as an office and easily converts to a sleeping space for guests.

Extra Long Twins

• Standard twin-size beds function well for most children and average adults. For taller individuals and for kids heading off to college, an extra long twin is preferable. The extra long twin measures 39 inches wide and 80 inches long. The extra length may add some versatility to the mattress. It could be a better choice for a couch bed or lounger, for example. Because of the extra length, finding sheets and linens may be more difficult.

Creating a King

• If you have two standard-size twin beds, you can push them together to create a pseudo-king mattress. The exact dimensions are slightly smaller than those of a standard king-size mattress. King-size mattresses measure 76 inches wide and 80 inches long. Pushing two twins together would create a mattress that is 78 inches wide and 75 inches long. While this creates a larger sleeping area, some problems can occur. It is hard to find single sheets to fit both mattresses, for example, and the crack between the two mattresses can be uncomfortable.