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Your Guide to Mattress Dimensions: All Sizes

by Great American Home Store

stack of mattresses in various sizes

At a Glance:

Mattress Dimensions: A Comparison Guide

Mattress Dimensions: King Beds

Mattress Dimensions: Queen Beds

Mattress Dimensions: Full Beds

Mattress Dimensions: Twin Beds

Why Trust Us?

A good night's rest is essential to your overall health. When you are shopping for a new mattress, the most important consideration is size. Having adequate sleeping space will improve your comfort and quality of sleep.

Standard beds are available in twin, twin XL, full, queen, king, and California king. Read this mattress guide from our Great American Home Store experts to learn each bed's differences, average cost, and sizes.

Mattress Dimensions: A Comparison Guide

Before we fully dive into mattress dimensions, here is a condensed breakdown of the most popular mattress sizes. Use this cheat sheet when measuring your bedroom.

Mattress Size


Sleeper Style



38" x78"


Child / Young Adult

Twin XL

38" x80"


Young Adult


54" x74"


Young Adult / Adult


60" x80"




76" x80"


Adult / Family

California King

72" x84'


Adult / Family


Mattress Dimensions: King Beds

King size mattress dimensions are 76 inches wide and 80 inches long. These large beds are ideal for couples and families. When shared by a couple, each sleeper gets 38 inches of personal space, which is larger than the width of a twin bed! In addition, the extra sleeping space helps ease pain in joints and muscles.

King mattresses usually start at $500 with an average price of $1,000. However, models with advanced comfort layers and patented support systems can cost several thousands of dollars.

Another large mattress option is a California King. This bed is slightly longer than a regular king, measuring 84 inches in length. However, it is only 72 inches wide. As a result, California kings are a better choice for tall people but offer less room for families.

In addition, California king beds are expensive, and it is more difficult to find bedding. The average cost of a California king mattress ranges between $1,200 and $1,600. Also, sheet and comforter sets usually cost at least $200 due to the expanded size of the bed.

King Mattress Recommendation: Jamison Bedding King Verdi Square Firm 9" Mattress

Jamison Bedding King Verdi Square Firm 9" Mattress

Shop This Jamison Bedding King Verdi Square Firm 9" Mattress

This firm Jamison Bedding mattress is constructed of several layers of supportive foam and coils with a  top cover made of soft, inviting fabrics. This bed is 9 inches thick and is compatible with adjustable bases. In addition, this King Verdi bed is super affordable, priced at just over $600!

Enjoy all the layers of comfort this king size mattress has to offer, including the following:

  • Super soft quilt foam that is made in a breathable knit fabric
  • Responsive coil system with edge guard reinforcements
  • Support pad for added pressure relief
  • Balance base support foam helps the mattress keep its shape

Cali King Mattress Recommendation: Cal King Sealy Posturepedic Hybrid Lacey 13" Firm Mattress

Cal King Sealy Posturepedic Hybrid Lacey 13" Firm Mattress

Shop This Cal King Sealy Posturepedic Hybrid Lacey 13" Firm Mattress

The Posturepedic is one of Sealy's most popular mattress models. This bed is firm and features a blend of memory foam and coil support. The cover is made of anti-bacterial fabric that doesn't absorb mildew, mold, or odor, which is perfect for hypoallergenic sleepers. In addition, a cooling layer helps wick moisture and heat away from your body while you sleep.

This California king includes all of Sealy's innovative comforts, such as:

  • Moisture wicking fabric
  • Responsive encased coils that increase stability and reduce motion transfer from your partner
  • Patented DuraFlex coil edge system that improves mattress flexibility
  • Gel memory foam that evenly disperses body weight and relieves pressure
  • 2.5 inches of Sealy Gel Foam for added foundational support
  • SealyChill mattress color that pulls heat away from the body and feels like an icy pillow

Mattress Dimensions: Queen Beds

Queen mattress dimensions are 60 inches wide and 80 inches long. These beds are great alternatives for couples who do not have enough space for a king mattress. In addition, they are the smallest mattress that is suitable for people over six feet tall.

While there is a significant size difference between a king and queen bed, there is not a big difference in price between the two. The starting price for queen beds is $500; however, the average cost is $1,200. This is the most popular mattress size, so due to demand and the large variety of options, queen beds can cost just as much or more than king beds.

Queen Mattress Recommendation: Jamison Bedding Queen Bethel Heights Eurotop 13" Mattress

Jamison Bedding Queen Bethel Heights Eurotop 13" Mattress

Shop This Jamison Bedding Queen Bethel Heights Eurotop 13" Mattress

Eurotop mattresses are the most popular bed styles sold. They have a supportive innerspring base that is topped by a plush foam topper. This queen bed is thicker than memory foam or hybrid options and is ideal for side and back sleepers. Experience a restful night of sleep thanks to the best of Jamison Bedding's features, including the following:

  • A cooling gel that releases heat and circulates air
  • Cloud-soft foam that contours to your body and relieves pressure
  • Balanced innerspring coils are entirely encased in foam for more responsive support
  • Made in the USA
  • Full 10-year manufacturer warranty

Mattress Dimensions: Full Beds

Full size mattress dimensions are 54 inches wide and 74 inches long. Full beds are commonly used in guest rooms, and they are considered single-sleeper beds but could accommodate two children when the kiddies have a sleepover. Full beds are not recommended for anyone over six feet tall unless they want their feet hanging over the edge of the bed, which can be extremely uncomfortable. However, full size mattresses are frequently called the "transition" bed and are used as an alternative to twin beds in kid bedrooms as they grow into tweens and teens.

You can find inexpensive full beds for around $250, but typically the average cost for this sized mattress is $850–$1,100. The prices tend to range because of the brand, materials used, and the firmness level of the bed.

Full Mattress Recommendation: Jamison Bedding Full Hudson Bay Firm 13" Mattress

Jamison Bedding Full Hudson Bay Firm 13" Mattress

Shop This Jamison Bedding Full Hudson Bay Firm 13" Mattress

This full mattress is perfect for teenagers. It is constructed with layers of cooling technology, including:

  • Cooling mattress cover
  • Gel infused foam that disperses heat
  • Individually pocketed coils that promote air circulation

In addition, this bed is guaranteed to keep its shape thanks to supportive edge technology and a firm balanced base of foam. This full size mattress is compatible with adjustable bases and is also available in different bed sizes. The Jamison Bedding Hudson Bay Firm mattress is one of the brand's more luxurious models and is available for just under $800. Enjoy a restful night's sleep on this blended foam and coil full sized bed.

Mattress Dimensions: Twin Beds

Twin mattress dimensions are 38 inches and 78 inches. They are ideal beds for kids' rooms, bunk beds, and spare rooms. Twin beds are designed as single sleepers and are a sizable upgrade to a crib. In comparison, crib mattress dimensions are 28 inches wide and 52 inches long.

If you are looking for more space than a twin bed, and can't accommodate a full size mattress, consider a twin XL. Twin XL mattress dimensions are 38 inches wide and 80 inches long. These beds are the same width as regular twin mattresses and are designed for single sleepers; however, the upgraded length of a twin XL bed is better for tall teenagers and guest rooms. As a result, twin XL beds are the standard mattress size for dorms and residence halls.

As an entry-level size, twin beds can be bought for less than $200. However, for a quality innerspring or hybrid model, you can expect to pay around $600. While twin XLs can run slightly higher, the average price remains about the same as regular twins.

Twin Mattress Recommendation: Jamison Bedding Twin Fairstone Bunkie 4.5" Mattress

Jamison Bedding Twin Fairstone Bunkie 4.5" Mattress

Shop This Jamison Bedding Twin Fairstone Bunkie 4.5" Mattress

This twin mattress is the perfect transition bed for fast-growing kids. In addition, this bed is highly affordable and can be purchased for less than $200. However, despite its low price tag, it has all the comforts that Jamison Bedding provides, including 4.5 inches of HD foam. Use this twin sized bed on bunk beds as an extra mattress for sleepovers or to bridge the gap between the crib and a full size bed.

Twin XL Mattress Recommendation: Twin XL Sealy Posturepedic Plus Satisfied II Ultra Firm 12" Mattress

Twin XL Sealy Posturepedic Plus Satisfied II Ultra Firm 12" Mattress

Shop This Twin XL Sealy Posturepedic Plus Satisfied II Ultra Firm 12" Mattress

This twin XL mattress is a step up from the regular pocket coil Posturepedic bed. It has layers of body-conforming foam and responsive coil support to encourage a restful night's sleep. The cooling cover pulls heat away from your body and keeps the mattress feeling and smelling fresh. Back and stomach sleepers prefer the ultra-firm support of the Sealy Posturepedic Plus.

Whether you are moving into a new home or just looking to upgrade your bed, visit a Great American Home Store to test out a variety of mattress firmness and brands. Experience the difference extra space makes by comparing queens and kings side by side. Or decide which size is best for your guest room and visiting family members. Finally, make growing up more fun by taking your youngster for a mattress test. Compare twins, twin XLs, and full sized beds to find the mattress that will grow with them.

Why Trust Great American Home Store?

Boasting the largest selection of in-stock home furnishings in the Mid-South, the Great American Home Store is your one-stop shop to find all the furniture and décor items your home needs. Our buying team is constantly searching across the globe for the next hot style in home fashion products. We go to several markets a year comparison-shopping to ensure you'll be able to find everything from formal living to casual comfort at the lowest prices. Since our business is backed by the manufacturer, we can promise that we bring you all your furniture needs at prices that are far below our competitors'.

At the Great American Home Store, we also understand the importance of offering a vast selection for any-size budget. We offer many flexible financing options with approved credit so that you can find the perfect furnishings to reflect your unique style.

Shop Mattresses at Great American Home Store

The home of your dreams is closer than you think. Shop mattresses online or visit us today at one of our furniture stores in Memphis, TN and the Mid-South. Check out our website to shop local furniture sales and subscribe to our email list to be the first to learn about our special offers. Our experts at Great American Home Store are always happy to help you learn more about mattress dimensions — whether you call us at 800-260-4898 or use our online chat feature. Contact us today!

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