Most adults in the United States and Canada prefer to sleep on full-sized (also called double) or queen-size mattresses. There are several different types of these mattresses, including extra-long and extra-wide versions. You can also buy a mattress with a pillow top if you'd like a little extra comfort.
Standard mattresses sizes are twin, full or double, queen, and king, but there are a few variations within these designations. If you are thinking about replacing your mattress, or you need to buy new sheets for the mattresses you already have, knowing the dimensions of standard mattresses will help you make an informed decision.
Full-Size Mattress Dimensions
Full-size mattresses come in two sizes, regular and extra long. A regular full mattress measures 54 inches wide by 75 inches long. An extra-long full mattress measures 54 inches wide by 80 inches long, which makes it a good choice for a person who is more than six feet tall.
Queen-Size Mattress Dimensions
A standard queen-size mattress is 60 inches wide by 80 inches long. An Olympic or expanded queen-size mattress is a little wider--66 inches by 80 inches long. This is a good option if you'd like a little more room for each person sleeping in the bed, but you don't have space for a king-size mattress. A California queen-size mattress is a little longer--60 inches wide by 84 inches long. The length is a full seven feet, so tall people might prefer this size mattress.
Regardless of which type it is, an average mattress of good quality is about eight inches thick. For several years, manufacturers have been offering some mattresses with a pillowtop option. A pillowtop is an extra layer of quilted padding that is attached to the top of the mattress. Pillowtops give an added dimension of comfort and luxury to a mattress, and can increase the thickness by an additional three to five inches.
Bedding for Pillowtop Mattresses
It can be a challenge, however, to find sheets that are deep enough to fit over a pillowtop mattress, so you'll have to keep this in mind when you're shopping for bedding. Sheet manufacturers have been rising to the occasion by making sheets that have longer corner pockets, but the only way to be sure the sheets will fit is to know how big your mattress is and to look for the dimensions of the sheets on the packaging.