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Mattress Size Guide


Several factors come into play when choosing the right size for your mattress. Cost is usually the primary consideration, since mattresses tend to increase in price as they increase in size. Additionally, you should take into account your height and weight (and the height and weight of your partner), as well as the dimensions of your bedroom. Some mattress shoppers may not be satisfied with a standard size; in these cases, a specialty or customized size may be the best option

Read on to learn more about standard and specialty sizes you’ll find when shopping for a new mattress.


Standard Mattress Sizes

First, let’s look at the six standard sizes found in mattresses sold today. Please note that some brands do not follow these exact sizes, and there may be a margin of error of one to two inches.

  • Twin (38W” x 75L”): Also known as a ‘Single’, Twin is the smallest of all standard mattress sizes. They are designed to sleep one individual, though some adults are too tall to sleep comfortably. For this reason, Twin mattresses are often used in children’s beds, as well as guest rooms.
  • Twin Extra Long (38W” x 80L”): Known as Twin XL for short, this size is essentially an elongated version of the standard Twin. They can accommodate one adult or child, particularly individuals who are too tall for Twin mattresses. They are often used in commercial facilities (such as hospitals and college dorms), but may also be suitable for guest rooms. Many brands price Twin XL mattresses the same as Twins, but some price Twin XL models slightly higher.
  • Full/Double (53W” x 75L”): Full or Double mattresses share the same length as Twin sizes, but are roughly 15 inches wider. This allows single sleepers more room, making Full/Double mattresses suitable for larger individuals. However, they are too thin for most couples to sleep comfortably, and — like Twins — may not be long enough for taller sleepers.
  • Queen (60W” x 80L”): Queen is the most common size among mattresses sold today, and is often the size used when comparing price-points between different brands. They are roomy enough for couples to sleep comfortably, but are also a suitable choice for exceptionally tall and/or large adults and children.
  • King (76W” x 80L”): King mattresses are usually considered the best choice for couples, since they offer roughly 16 additional inches in width over Queens. They are also ideal for parents with young children and/or people with pets who sometimes share their bed with more than just their partner.
  • California King (72W” x 84L”): California Kings are four inches thinner and four inches longer than standard Kings, so experiences with the two sizes often come down to personal preference. Most brands price California Kings the same as Kings.


Specialty Mattress Sizes

Next, let’s look at some specialty sizes available from some (but not all) mattress manufacturers.

  • Crib/Toddler (27W” x 52L”): The smallest mattress size available, the Crib/Toddler is best suited for children who are three feet or shorter. These mattresses are relatively firm in order to provide a more stable sleep surface for babies and toddlers.
  • RV (48W” x 75L”): Also known as a Three-Quarters mattress, the RV size is five inches thinner than a standard Full or Double. This makes them particularly suitable for single-sleeper beds in motorhomes and trailers, hence the name.
  • Full/Double XL (53W” x 80L”): With five extra inches of length, this size is a good choice for people who are too tall for standard Full/Double mattresses.
  • Short Queen (60W” x 74L”): A Short Queen is five inches shorter than a standard Queen. This is a popular choice for motorhomes and trailers, as well as a primary bed for single sleepers.
  • Split Sizes: Split mattresses are constructed with two identical halves that can be joined in the middle (usually lengthwise) to form a Queen, King, or California King size. Splits are typically the most expensive mattress size available, though some brands price them the same as their standard counterparts. The measurements for standard Split mattresses are as follows:
  • Split Queen: 30W” (2 pieces) x 80L”
  • Split King: 38W” (2 pieces) x 80L”
  • Split California King: 36W” (2 pieces) x 84L”
  • Texas King (80W” x 98L”): Extremely large and fairly uncommon, the Texas King covers an impressive 54.4 square feet. This mattress is suitable for any couple, though moving it into some bedrooms may prove problematic.


Mattress Size Summary

For a detailed summary of standard and speciality mattress sizes, check out the table below .

Size Standard Width Standard Length Number of Sleepers Common Uses Notes
Crib/Toddler 27″ 52″ 1 Infant or toddler’s bed
Twin 38″ 75″ 1 Child’s bed or bunkbed Guest bed May be too short for some adults Usually same price as Twin XL sizes
Twin Extra Long (XL) 38″ 80″ 1 Child’s bed or bunkbed Guest bed  Commercial facilities Usually same price as Twin sizes
RV or Three-Quarters 48″ 75″ 1 Single person’s bed Trailer or motorhome bed May be too short for some adults
Full/Double 53″ 75″ 1 Single person’s bed Commercial facilities May be too short for some adults
Full/Double XL 53″ 80″ 1 Single person’s bed Commercial facilities
Short Queen 60″ 74″ 1-2 Primary single person’s or couple’s bed Trailer or motorhome bed May be too short for some adults
Queen 60″ 80″ 1-2 Primary couple’s bed Lodging
Split Queen 30″ (2 pieces) 80″ 1-2 Primary couple’s bed
King 76″ 80″ 2+ Primary couple’s bed Usually same price as California King sizes
Split King 38″ (2 pieces) 80″ 2+ Primary couple’s bed Usually same price as a Split King
California King 72″ 84″ 2+ Primary couple’s bed Usually same price as King sizes
Split California King 36″ (2 pieces) 84″ 2+ Primary couple’s bed Usually same price as Split King
Texas King 80″ 98″ 2+ Primary couple’s bed



If you are unsure which mattress size best suits your needs, we recommend testing out differently sized mattresses in person. Most brick-and-mortar mattress showrooms and retailers have a wide selection of both standard and specialty sizes. For more information on selecting the right mattress, please visit our Mattress Buying Guide.