Mattress Sizes
The amount of space you have is usually the most important factor when purchasing a mattress. It's recommended to have the largest bed your space will allow. Your bed should be wide enough and long enough so that each sleeper can rest comfortably in their space. Try to purchase a bed that is at least four inches longer than the height of the tallest sleeper.
Twin: 39" wide x 75" long
Full: 54" wide x 75" long
Queen: 60" wide x 80" long
King: 76" wide x 80" long
California King: 72" wide x 84" long