Mattresses vary in height, and they are typically about 4.5 inches in thickness. Box springs are anywhere from 4 to 9 inches, while the total height of a mattress set from the floor is about 38 to 39 inches, according to STLBeds. Verities are available for differing looks and comfort.
The standard length of a full sized mattress is 75 inches, according to The Bedding Experts, though Serta indicates the typical length is 74.5 inches. Some companies allow customers to purchase full sized mattresses with an "extra long" add-on feature.
The width of a full sized mattress is 54 inches, according to The Bedding Experts, but 53 inches according to Serta. As of 2015, a full sized mattress is common selection for a small child when parents want to allow extra height for the child to grow. Around the 1970s and 1980s, full sized mattresses were more common for couples because of smaller bedrooms of the time, according to The Bedding Experts.