The dimensions of a standard hospital bed are 38 inches in width and 84 inches in length, when measured from the outside of the headboard to the footboard. The dimensions of the sleep surface of the bed are 36 inches in width and 80 inches in length.
A standard hospital bed is a twin size with an XL length. Most such beds also feature an extension kit that allows the length of the bed to be extended by another 4 inches.
The standard hospital bed is designed to bear a maximum weight of 450 pounds. Bariatric hospital beds have wider sleeping areas, and their weight-bearing capacity is higher.