Mattress Sizes
How to Choose the Right Mattress Size for You

Mattress Size Comparison

Beds come in a variety of different sizes to accommodate different needs and preferences. 

Each "mattress size" corresponds to standardized dimensions for the length and width, so that mattresses from different brands will all fit the same bed frames and headboards.  The most common mattress sizes are King, Queen, Full (Double), and Twin (Single).

Standard Mattress Sizes

Below are the measurement dimensions (in inches) of the most popular mattress sizes in the United States and Canada.


Mattress Size

     

Dimensions

King 76" wide x 80" long
• California King 72" wide x 84 " long
• King Split (aka, Dual King)

78" wide x 80" long
(2 mattresses, each 39" wide x 80" long)

 
Queen 60" wide x 80" long
California Queen 60" wide x 84 " long
Olympic Queen
66" wide x 80 " long
• Queen Split

60" wide x 80" long
(2 mattresses, each 30" wide x 80" long)

 
Full (aka, Double) 54" wide x 75 " long
• Full Extra Long (Double Extra Long)
54" wide x 80" long
• Three-Quarter (3/4 Bed) 48" wide x 75" long
 
Twin (aka, Single) 39" wide x 75 " long
• Super Single 48" wide x 84" long
• Twin Extra Long (Single Extra Long)
39" wide x 80" long
 
Crib (or Toddler Bed) 28" wide x 52 " long

 

Choosing the Right Mattress Size

In choosing a mattress size, make sure to choose a size that is big enough to comfortably fit those sleeping in the bed, but small enough to fit comfortably in the room where it will be placed (including enough room for each person to get in and out of bed!).  Consider your future needs as well, since an investment in a quality mattress should last you 8-10 years.  Lastly, it doesn't hurt to take some measurements to make sure the size you choose will fit through the doorway, hallways, and stairwells of your home.

Mattress Size Trends

Not surprisingly, bed size preferences appear to be getting larger over time. Until as recently as the 1970's, the most popular bed size was Full (which is why Full-size mattresses are sometimes referred to as "Standard" size). However, the Queen bed is now the most widely purchased mattress size in the US, followed by the King-size mattress. The California King (also known as "Western King"), a relative newcomer that is slightly longer and narrower than a standard King (sometimes referred to as an "Eastern King"), is also growing rapidly in both popularity and availability.

Unique Mattress Sizes

Though most mattress models are available across a wide variety of sizes, certain bed types are known for being more limited in their size selection. For instance, hard-sided waterbeds are generally not available in traditional bed sizes, but rather are found in the longer California King, California Queen and Super Single sizes. Similarly, "King Split" and "Queen Split" mattresses tend to be most commonly used with adjustable beds. Likewise, "Extra Long" bed sizes are most often found in dormitories, 3/4 mattresses are used primarily with antique bed frames, and crib mattresses are naturally used only in baby beds and toddler beds.

When considering an unconventional mattress size, be aware that your selection of bedroom furniture (eg, bed frames, headboards, footboards, and the like) as well as sheets and other bedding will be much more limited -- and perhaps more expensive -- in these less popular sizes.

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