A full size mattress, also known as a double or standard mattress, is roughly 54 inches wide and 75 inches long. A full size mattress is not considered large enough for two adults to sleep comfortably. More »

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In the United States, a standard twin mattress normally measures 39 inches wide and 75 inches long, which is the same length as a standard double mattress. In the United Kingdom and Ireland, the average twin mattress is ... More »

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An extra long twin mattress is 39 inches in width and 80 inches in length. A traditional twin mattress is five inches shorter at 75 inches in length. More »

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A full size mattress is 54 inches wide by 75 inches long. The depth of the mattress can vary from manufacturer to manufacturer and can be an important consideration when purchasing sheets. Extra-deep mattresses require s... More »

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A full size mattress is 53 inches wide and 75 inches long. It is is only 15 inches wider than a twin size mattress, and only recommended for people who are under 5 feet 5 inches in height. More »

www.reference.com Home & Garden Furniture Beds & Mattresses

A standard full size mattress is 54 inches wide by 75 inches long. This type of mattress is commonly referred to as a double or standard mattress and was commonly used by two adults when room sizes were smaller. More »

www.reference.com Home & Garden Furniture Beds & Mattresses

A twin size mattress is narrower than a full size mattress, according to Consumer Reports. A twin or single mattress is 38 inches wide by 75 inches long. A full or double mattress is 53 inches wide by 75 inches long, whi... More »

www.reference.com Home & Garden Furniture Beds & Mattresses