Common Mattress Sizes. Twin mattresses are 38 inches wide and should only be purchased for small children or single adults. Full size mattresses generally work for young adults or young children who'll eventually grow into the bed. Queen beds are 60 inches wide and 80 inches long and are the most popular size mattress for partner sleep.What are the measurements of a standard mattress?
A standard mattress (also called a full or double mattress) used to be the most common bed for couples when homes were much smaller than they are today. These measure 54 inches wide and 75 inches long with an average depth of between eight and 12 inches.What are the different sizes of mattresses?
Common Mattress Sizes. Twin mattresses, some of the smallest on the market, measure 38 inches wide by 74 inches long. The slightly longer twin XL mattresses, most commonly found in dorms, are 38 inches wide by 80 inches long. Full beds are slightly larger, measuring 54 by 74 inches.