In What Sizes Do Beds Come?

Updated November 21, 2016

Beds come in several different sizes, from the largest, which is known as the king, to the smallest standard size, which is the twin. Of course, you can find even smaller beds that are made for children. When you choose what size bed you need, look at how much space is available in your bedroom. If sleeping with another person, select a bed with enough room for both of you to stretch out.


Choose a king size bed if your bedroom is large and you enjoy a lot of space for sleeping. King size mattresses are 80 inches wide and 76 inches long. Their depth ranges widely, from about 7 inches to 20 inches, including a soft pillow top. Know the depth of your mattress, as well as the length and width, when you purchase sheets. Many regular sheets will not fit on mattresses that are too deep. For those, you need deep-pocket sheets.

California King

A California king is longer than a regular king but is also narrower. The mattress measures 72 inches wide and 84 inches long. If you are very tall, the California king is the ideal bed for you. You can find California king mattresses in the same depth range as regular king size beds. Choose sheets that are made for California kings, although they are more difficult to find than sheets for standard king size mattresses.


The next size down from a California king is the queen size bed. This size is a favourite for many couples because it isn't too big for most bedrooms, but it is roomy enough for two people. Queen size beds measure 60 inches long and 80 inches wide. Choose deep-pocket sheets if your queen size bed has a pillow top or is especially deep.


Full size mattresses are sometimes referred to as double beds because this size is large enough for two average-size people. Full or double beds measure 54 inches wide and 76 inches long. You may see sheets and comforters marked as either "full" or "double," but the sizes are the same.


Twin beds are favourite choices for older children or single people who don't have much space in their bedrooms. Most twin size beds are 39 inches wide and 75 inches long. If you are looking for a twin bed that a taller person can sleep in, you can find twin beds that are 39 inches wide and 80 inches long. When you purchase sheets, check the dimensions so that the sheets will fit properly.

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