The Dimensions of Full & Double Size Mattresses
- All full size or double beds are the same width, measuring 54 inches wide, which is equal to 4-1/2 feet.
- Double beds are the same length as twin size beds, measuring 75 inches or 6 feet, 3 inches long.
- One advantage of a double or full size bed is that it is generally wide enough for one person to comfortably sleep. Its small size also allows it to fit in smaller rooms, such as guest bedrooms or smaller apartments.
- The primary disadvantage of a full size bed is that it may not be long enough for taller individuals who need more legroom. Some couples also elect to purchase a full size bed, but are limited to a mere 27 inches each, a big stretch from the 39 inches offered by a single bed.