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Twin vs. Twin XL Mattresses

Teenager sitting on twin mattress
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Debating on whether you should buy a twin or a twin XL mattress? The biggest difference between twin and twin XL mattresses is the length. A twin XL mattress is five inches longer than a regular twin mattress, making the twin XL mattress a good option for taller people. However, there is no difference in width, so the twin XL is still a single sleeper mattress.  

Mattresses are a big investment, no matter what the size. And it’s important to make sure you pick the best mattress for your needs. We’ve provided some useful information about twin and twin XL mattresses to help you decide which one is best for you.    

Twin vs. twin XL mattress dimensions and cost

The main difference between a twin and twin XL mattress is the length. Because a twin mattress is smaller than a twin XL, they’re typically best for college dorms, growing children, or guest rooms. Here are the twin vs. twin XL dimensions:

TwinTwin XL
Width38 inches38 inches
Length75 inches80 inches
CostPrices range from $79 and upPrices range from $100 and up
Best forChildren and teensTaller people

More on twin mattresses


  • Allows for plenty of floor space
  • Great for shared bedroom spaces
  • Can provide seating as a daybed in a guestroom
  • Cheaper option for college students and those on a budget


  • Single sleeper bed
  • Mattress length may be too short for adults and tall teens
  • Not ideal for sleepers who move around a lot

With dimensions of 38″ by 75″, twin beds are a popular choice for children, average-size adults, and teens. If you need to save space, this is an inexpensive way to create a comfortable sleeping spot. Plus, it’s the cheapest and most available size mattress. 

Pricing for these mattresses depends on their material, thickness, and topper type. Twin mattresses usually fall within a $79 – $150 price range. 

More on twin XL mattresses


  • Additional length gives extra legroom
  • Fits well in certain bunk beds
  • Ideal for small living spaces


  • Doesn’t fit a standard twin size bedframe 
  • Not ideal for sleepers who move around a lot
  • Single sleeper bed

The twin XL dimensions are longer than a regular twin by five inches, measuring 38″ x 80″. That extra length makes these mattresses ideal for adults, tall teens, and those looking for a dorm room or guest room bed.

Pricing for these mattresses varies depending on the materials, the type, and if there’s a built-in topper. Twin XL mattresses usually fall within a $100 – $250 price range. 

What to consider when choosing between a twin and twin XL

There’s only one dimensional difference between a twin and twin XL mattress, but they are still different enough to come with different prices and sleep recommendations. Here are a few considerations to take into account when deciding between a twin and twin XL mattress.

  • Price: twin XL mattresses tend to be more expensive than a regular twin size.
  • Sleeper height: twin XL mattresses are a better option for sleepers over six feet tall.
  • Room space: twin XL bed frames are larger and take up more space than a twin.

The bottom line

While there are not too many differences between a twin vs. twin XL, the length is what matters the most. That extra five inches in a twin XL helps tall teens and adults who have a limited amount of sleep space in their room. 

You can save even more space by opting for a twin XL loft bed. And If you’re looking for a few extra options, check out some of our team’s mattresses that we use in our homes.

Frequently asked questions


Can twin sheets fit on a twin XL?


Many manufacturers make sheets that fit both twin and twin XL mattresses. However, it’s a good idea to make sure the sheets are deep pocket to compensate for the mattress’s extra length.


Which is bigger: twin or twin XL?


A twin XL is bigger. Both mattresses are the same width, but they differ in length. A twin XL is longer than a twin by five inches.


Will a twin XL comforter fit a twin bed?


Yes, though, be sure to consider the extra length of the quilt or comforter. For example, if you’re using it for a bed sitting on a frame, the comforter is going to look long. So you might run into difficulties if you use this comforter on a twin loft or bunk bed set.


Can you loft or bunk both types of mattresses?


Yes, twin and twin XL beds are excellent options for loft and bunk beds. If you’re trying to save space but need extra length, using a twin XL loft bed is ideal. These configurations work well in college dorm rooms, as well as anywhere else where there’s limited space.

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