In the United States, a standard queen mattress is 60 inches wide and 80 inches long. An expanded super or Olympic-size queen mattress is 66 inches wide and 80 inches long.
A California queen water bed insert is 58 inches wide and 82 inches long. A standard queen mattress is 6 inches wider and 5 inches longer than a full-size mattress. Queen size mattresses are a popular size for couples, guest rooms and single people who like a good deal of room in bed. The exact dimensions of a mattress size may vary slightly in actual size, due to specific manufacturing, the level of padding and the support type.