Mattress Size Information

Standard Mattress Sizes

Modern mattress models are commonly manufactured in the following sizes: King, California King, Queen, Full XL, Full, Twin XL, and Twin. Not all models are made in every size, though many are. Each of these mattress sizes is designed to meet a specific need. Factors like room size, how active of a sleeper you are, and whether or not you share the bed determine which size would best suit your needs.

See our Best Mattresses of 2020 article to see the top choice for any size.

show cm‚û¶show inches‚û¶
King »76" x 80"183cm x 203.5cm
Cal King »72" x 84"183cm x 213.5cm
Queen »60" x 80"152.5cm x 203.5cm
Full XL »54" x 80"134.5cm x 203.5cm
Full »53" x 75"134.5cm x 190.5cm
Twin XL »38" x 80"96.5cm x 203.5cm
Twin » 38" x 75"96.5cm x 190.5cm

King (76" x 80")

To find out if a king size mattress is right for you, consider your needs along with how much space you have. Be sure to measure out how much floor space a King will take up before buying one, you may be surprised how much your walkways will shrink!

  • Designed for couples who want spacious luxury
  • Couples with an active and/or very light sleeper will have plenty of space in a King-sized bed for one person to move without disturbing the other
  • As the largest of the standard mattress sizes, you can expect King mattresses to be the most expensive for any given model
  • Two twin mattresses are equivalent to a king size
  • May also be called an Eastern King
  • A king bed is not a square
Shop King Size Mattresses

California King (72" x 84")

A California King size may be your ideal mattress if you are tall and have a good amount of room for a bed. California King beds are a great solution for tall people whether or not they share the bed.

  • Works for individuals or couples
  • Designed for tall people (especially over 6 ft) whose feet hang off the end of most beds
  • Trades 4 inches of width for an extra 4 inches of length (compared to standard King size)
  • Still plenty wide enough to share, 12 inches wider than a Queen
  • The total surface area of the cal king is slightly less than a regular king size
  • May also be called a Western King
  • Longest standard mattress size
Shop California King Size Mattresses

Queen (60" x 80")

Queen size mattresses are the gold standard in the industry today. The queen bed is ideal for couples who are looking for a cost-effective, floor space-friendly mattress, making it the most common bed size for master bedrooms.

  • Designed for couples
  • Width suitable for sharing
  • Length that works for most
  • Most commonly used size for advertising prices
  • Usually the most cost-effective size (area vs. price)
  • Most affordable size for couples
  • Thanks to its popularity, the largest selection of bedding, furniture and more will be available for the Queen size
Shop Queen Size Mattresses

Full XL (54" x 80")

Full XL mattresses work well for tall, active sleepers who want the largest size intended for single person use. Although they are spacious for an individual sleeper, extra-long fulls don’t have the width to effectively accommodate couples.

  • Designed for tall single sleepers
  • Same width as a Full bed, but 5 inches longer
  • Doesn’t have the width to effectively accommodate couples
  • Often costs the same as a Queen
  • Most spacious standard mattress size meant for single sleepers
Shop Full XL mattresses

Full (54" x 75")

Full mattresses work well for active sleepers and children/teens during their transition years. They are best for an individual sleeper, although they used to be the standard for couples until the queen size was introduced.

  • Designed for single sleepers who want something more spacious than a Twin
  • Also known as a double
  • Some full size models may still work for couples, but the small price difference between a Full and a Queen isn’t worth the inferior comfort unless there’s a strict space constraint
  • May be a good option for a guest bedroom
  • Good transitional bed for students or young adults
Shop Full Size Mattresses

Twin XL (38" x 80")

Twin XL size mattresses are not wide enough for sharing, but are recommended for growing teens or tall adults. Usually people looking to save space and money find their match with a twin XL bed.

  • Designed for single sleepers who need more length than a Twin
  • Best for those who are not very active sleepers
  • Great for saving space in a small room
  • Same width as a Twin but 5 inches longer
  • Commonly used in dorm rooms
  • Most affordable size for tall individuals
  • Easy to move around
Shop Twin XL Size Mattresses

Twin (38" x 75")

Twin size mattresses work well for kids and adults who don't need a spacious sleeping surface, but they’re not viable for sharing. They’re good for saving space in a bedroom, dorm room or apartment.

  • Designed for single sleepers
  • Best for sleepers who are not active during the night
  • Good for saving space in a bedroom, dorm room or apartment
  • Smallest standard mattress size
  • Most affordable standard mattress size
  • Easy to move around
Shop Twin Size Mattresses

Custom Sizes (varies)

From the rare 3/4 size to antique sizes and other custom dimensions, US-Mattress has options outside of the seven standard mattress sizes to solve any and all of your sleeping needs. Whether you are looking for a mattress for your RV, semi-truck, boat, or an unusual room, you can custom order mattresses in specific sizes to suit your needs.

Maybe you want an extra thin mattress to fit into a tight space, or a mattress with the width of a Twin and length of a Cal King, or have a custom or antique bed that is just a few inches off from a standard size. Whatever the case, check out our made to order mattresses to get the perfect custom size. Shop Custom Size Mattresses

More Information

When you know which size is right for you, you can begin to shop for your new mattress. Please note: all mattress manufacturers work on a 1-inch tolerance (except Corsicana, they have a 2-inch tolerance). Dimensions listed above could be up to 1-inch shorter and/or narrower than specified.