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What Are The Dimensions Of A Xl Twin Mattress

Twin Size Mattress Dimensions: How Big Is A Twin Size Bed

Twin vs Twin XL Mattress & Bed Frame: Differences [Pros & Cons] Which Size is Better?

By Andrew Russell, Wellness Writer

Not counting a crib mattress, a twin mattress is the smallest standard size available. Its an affordable mattress for sleepers who dont need much space or are trying to make the most of a studio apartment or small bedroom.

A twin size mattress is usually 38 inches wide and 75 inches long, for a total surface area of 2,850 square inches. The dimensions can vary slightly by companies, with some selling twin size mattresses that are 39 inches wide instead. We recommend a twin size mattress for any room thats at least 7 feet by 10 feet.

Mattress Sizes And Dimensions Chart

Mattress Size
27.25″ X 51″ 69.2 X 129.5cm

Apart from the texture and feel, there is another very important facet of your mattress which influences your choicethe size. Getting the right size mattress is one of the crucial determinants leading towards the ultimate goal of a good nights sleep.

When looking for a new mattress, choosing the right size from a plethora of options can be difficult, especially when there are sub-categories in certain segments. With very little difference in dimensions between certain sizes, getting the right fit for yourself can be a daunting task.

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The size of your bedroom and your budget are key factors in your decision-making process when looking for the ideal bed size. In this mattress sizes and dimensions guide, we will discuss the different mattress sizes available and the recommended room size for each of them to help you choose the most-fitting mattress size. For most homes though, a Queen size mattress is the most popular option but plenty of people opt to go smaller with Full size mattresses or larger Kings .

Find the best mattress for your unique needs!

Most mattress brands offer the following six sizes.

Great For Growing Children

Twin beds are ideal for kids of all ages. When young children outgrow their crib mattress or toddler bed, they may not be quite ready for a full size bed. Plus, their bedroom may not accommodate a larger bed or it may take up too much living space.

Twin beds are the perfect size for any childs room. This size allows kids to sleep comfortably in a more spacious bed. Plus, a twin bed wont encroach on their play area or the available living space in their bedroom. If you have two children that share a room, two twins will leave extra space in the room, so kids wont feel cramped.

Older children may start to feel confined when sleeping on a twin bed. Throughout their teen years, kids may prefer a mattress that offers them a bit more space spread out and more leg room as they grow. In this case, a full or queen size bed may be the best option. However, if these mattresses are too big for their bedroom, you can opt for a twin XL. Twin XL mattresses are particularly helpful for taller teens since they are 5 inches longer than a regular twin.

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Twin Size Bed Dimensions

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When it comes to a practical, affordable, and versatile bed, a twin size is the best option. Although twin mattresses are not the most popular size, they run a close second after queen size beds. Found in dorm rooms, small city apartments, and childrens rooms across the countrytwin beds are a great space saver. Plus, they come with several other surprising benefits.

Twin Vs Twin Xl Differences

Extra Long Mattress

Like I mentioned above, the only difference between a twin and twin XL mattress is their length. The twin XL is 80 inches in length, which is the same length as a queen size mattress, whereas the twin is 75 inches in length, which is the same length as a full size mattress.

A difference in length can change who these mattresses are best for. Twin XL beds have become very popular in college dorm rooms because they save space while accommodating taller teenagers and young adults. If youre looking for a mattress that can save space while still comfortably fitting an adult or growing teen, Id recommend a twin XL. You can also check out our best mattress for teenagers roundup to find some other great options.

The twin XL is likely to be more comfortable than a twin mattress for anyone taller than 6 feet. The extra space should prevent their feet from hanging off the edge of the bed when they sleep, which is important for maintaining proper sleep posture and avoiding pain.

On the other hand, a small child or shorter adult might not need the extra legroom, in which case a twin mattress could be the way to go. Twin size mattresses are also popular sizes for bunk beds in childrens rooms, and its common for crib mattresses to be standard twin sized.

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Twin Xl Size Mattress Dimensions: 38 X 80

Twin XL mattresses bed dimensions are exactly the same as twin beds, except they are exactly 5 inches longer, making it a more suitable choice for taller individuals who sleep alone. They are even used in guest bedrooms as a king mattress by putting two different twin XL beds together.

A twin XL bed is even more suitable for college life than regular twin bed mattresses are, as the extra length goes a long way for increasing legroom. It is recommended that you have a minimum of 7.5 x 10 feet of space in your room to be able to fit a twin XL comfortably. Check out the Puffy Lux Twin XL Mattress.

Practical And Easy To Move

Unlike queen and king size beds, twin beds are lightweight and easy to move. If you move frequently, these beds can be easily fit in most vans, trucks, or storage spaces. Twin beds can also be quickly lifted up staircases or into apartment building elevators.

Twin size mattresses can even be used as couches on a futon style frame or daybed frame. This versatility allows those in small living spaces to maximize their space even more.

The trundle of a daybed can be pulled out for guests, and futons can function as a couch during the day and a bed at night. Twin beds offer sleepers more creative ways to utilize their space.

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Whats A Twin Size Mattress

A twin size mattress, also known as a single bed, measures 38 inches by 74 inches. The twin size mattress is the smallest, compact standard size available on the market today. Twin size beds are perfect for childrens roomsfor families with more than one child, parents may find bunk beds a great option, leaving extra space for playing.

Twin or single size beds are also good options for guest beds and adults with limited living spaces, like studio apartments.

Twin And Twin Xl Mattresses

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Theres only one variation of the standard twin mattress a twin XL size mattress. It is as wide as a twin bed, but with 5 extra inches of length for a total of 80 inches. That makes the surface area 3,040 square inches.

A twin XL mattress is an excellent choice for a childs first bed that should last well into their teen years. The extra 5 inches can accommodate most growth spurts, and a young adult will likely be able to bring their twin XL bedding with them to college. Most college dorms contain twin XL size bed frames and mattresses.

A twin mattress may be the better option for those who are shopping on a tight budget or are trying to make the most of a small space.

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King Vs Queen Comparison Chart

Queen Mattress
Smaller primary bedrooms Larger primary bedrooms

Beyond the basic dimensions, there are several other factors to consider when deciding between a king vs. queen mattress. Heres a more in-depth comparison between the two bed sizes:

King Mattress

  • Dimensions: 76 x 80 or 193.04 cm x 203.2 cm
  • Surface area: 6,080 square inches or 39,225.73 square cm
  • Casper price: Starts at $574
  • Best for: Couples or adults who want more space
  • Bedroom size: Larger primary bedrooms

Queen Mattress

  • Dimensions: 60 x 80 or 152.4 cm x 203.2 cm
  • Surface area: 4,800 square inches or 30,967.68 square cm
  • Casper price: Starts at $449
  • Best for: Couples or adults with smaller bedrooms
  • Bedroom size: Smaller primary bedrooms

To understand how these mattresses stack up against other bed sizes, take a look through our mattress size comparison guide.

Queen Vs Full Mattress: How To Choose

So, how do you choose between these two mattress sizes? Consider your current sleeping environment. Are you looking for a bed with more space? Are you looking for a bed to fill a guest room? If youre looking for a bed with more space, a queen-sized mattress is probably the best choice especially if you sleep with someone else. It will also allow room for pets and children if you have them. If youre looking to fill a guest room, opt for a full-sized bed. They are less expensive while still providing a decent amount of space for single sleepers. They are also easier to move around if you plan on relocating in the next year or so. For more comparison guides, check out our comprehensive guide to king vs. California king and twin vs. full mattresses.

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Twin Xl Bed Dimensions = 38 X 80

Twin XL beds are 5 inches longer than twin beds with their length measuring 80 inches and width remaining at 38 inches. An extra-long twin mattress is a perfect selection for those who are taller in height.

If youve ever wondered if a twin XL mattress can fit on a king size bed frame, the answer to this question is yes. A double twin XL fits nicely on a standard king bed frame so you and your partner can sleep comfortably on separate beds with different feels.

Mattress Size GuideQueen Size California King Size

Twin Xl Size Mattress And Dimensions

How To Convert Two Twin Beds To A King

Twin XL mattresses measure 39 x 80. Twin XL mattresses are 6 longer than a twin but they have the same width, which makes these beds ideal for children who are taller or for adults who have constraints with the width of their bedroom but not the length of their bedroom. It is also a very popular size found in most college dorm rooms.

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What Is A Full Size Mattress

A full size mattress, also known as a double bed, is 54 inches wide and 75 inches long. Its 16 inches wider and 5 inches shorter than a twin XL bed.

A full size mattress is a popular mattress size for many people because of its versatility and its ability to fit in compact spaces yet offer ample sleeping space. It is suitable for single adult sleepers who want to stretch out and sleep and can also be used by two kids or a teen.

Small Single Size Bed Dimensions

30 inches by 75 inches

Minimum recommended room size: 7 feet by 10 feet

Single mattresses and twin mattresses have the same dimensions, so these terms are often used interchangeably. However, the twin size is much more common nowadays, so if you have your eye on a single bed, a twin is just what you need.

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Which Size Is Best For You

Before choosing between twin vs twin XL, here are some important factors to consider:

Cost & Availability Twin mattresses are typically cheaper than twin XL, generally by $50-$150 or so. While there is not a huge difference in price, its also important to remember that accessories for twin XL may also be more expensive. If youre on a tight budget, you can save some money by going with a twin. Also, keep in mind that not all mattress manufacturers offer twin XL as an option and the same is true for manufacturers of mattress accessories, bed frames, and the like.

Height & Sleep Position The biggest consideration between twin XL and twin is the height of the sleeper. Twin XL offers an additional 5 inches of legroom, which can make a huge difference for those over 6 feet tall or so. A twin is 75 inches in length , which may seem sufficient for your height but keep in mind that your pillow takes up a decent amount of space.

Growing Children Twin mattresses are a popular choice for parents buying beds for their children and teens. Parents should consider the longevity of a mattress, which is typically 7-10+ years, along with the potential for their children to outgrow the bed. If your child is tall for their age, consider going with a twin XL to ensure that the mattress will be useful for many years to come.

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Which Mattress Size Is Right For You

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To find the right size of mattress for you, the first thing that you would need to do is to list down your requirement. How many people would use the bed, what is your space requirement, do you like to roll around or do you prefer a cozy space and so on. There is no one-size-fits-all when it comes to mattress purchases, so getting your basic information is important so you can make the right choice.

Another important factor to consider is what are brands giving you in terms of benefits and features. For example, what is the warranty, the trial period, the delivery service etc.

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Twin Size Mattress Dimensions: 38 X 75

Twin mattress are one of the most popular sizes for children who are too big to fit in a baby bed and too small to justify a full-sized bed. Twin mattresses are commonly used in bunk beds, as well. Check out the Puffy Lux Twin Mattress.

They are also quite common with single sleepers who are smaller in size, guest rooms, and college dorm rooms. Because of its convenient size, it is often used in houses and rooms with limited space to spare, such as studio apartments.

Twin mattress dimensions feature 75 inches of length, making it suitable for average to below-average height adults. To adequately fit a twin bed, you should be working with a minimum of 7 x 10 feet of space in a room.

Whats A Twin Xl Mattress

A twin XL mattress is also an extra-long variant of a regular twin-size mattress. The mattress measurements of dual XL beds are 38 wide and 80 long. Twin XL beds are 5 longer than standard twin mattresses. They are best for children and college students. Lets see pros and cons of this type of mattress.


  • The smallest footprint of any mattress which will fit an adult
  • Extra-long twin for more legroom. The extra length gives children more space to stretch out and leaves the mattress conducive to adults and tall adolescents also
  • Compact and easy to maneuver around
  • The more future-proof alternative for growing kids
  • You can create two Twin XLs to a king-size by putting them side by side, providing a different use for them if the children leave home
  • Great for bedrooms, studio apartments, or a college dorm


  • The extra length will probably be unnecessary for many kids, particularly considering the often marginally higher price of the mattress size along with its accessories
  • Small width could be a little restrictive, even if fitting one individual

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California King Size Dimensions: 72 X 84

California king size mattresses are quite similar to the standard king, with the only differences being 4 inches less width and 4 inches more length. It still provides the perfect conditions for a couple that requires more space than a queen bed has to offer. In addition, California king mattresses provide more comfort for a taller sleeper who needs a few extra inches to the length.

California king bed dimensions are the longest in the market, meaning that a minimum of 10 x 12.5 is recommended as any smaller may cause your room to feel cramped and overcrowded. Check out the Puffy Lux California King Mattress.

Things To Consider When Choosing

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Both mattress sizes carry an air of luxury with them. A mattress fit for a King should be perfect for you, right? However, there is much more to consider than status and stature. Take a look at your sleeping environment. Will your room fit a California King bed? Will your partners feet hang off the edge? Before buying into prestige, take the below into account.

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Room Size For A Twin Xl Bed

Twin XL beds are incredibly versatile since they take up so little space, they can fit in many rooms. In general, any room size larger than 7 feet by 10 feet should work for one twin XL bed. If you’d like to fit in two twin XL beds , you’ll need comparable, or slightly greater, room than you would need to fit a king: a minimum of 10 feet by 12 feet for a split king or 13 by 13 foot for two separated twin XLs. In general, ensure you have at least two feet of walking space around your bed.

Be sure to use caution when purchasing a bed frame for your twin XL mattress. Many people mistakenly purchase a twin size bed frame, which is five inches too short. Depending on the style of frame, the twin XL mattress can hang off the end or simply not fit in the bed frame at all. Make sure to purchase a twin XL size bed frame or mattress foundation so the extra length you get from your twin XL won’t be wasted!


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