Picking the ideal mattress for you can be an involved process – and in most cases, it should start with selecting the right mattress size. If you’re a single person, or you’re purchasing a bed for your child, a twin mattress should suffice. But what about a “twin XL” size? How does twin XL differ from a standard twin, and which is best for you?

The only difference between twin vs twin XL is in the length measurement, with twin XL being 5 inches longer. This means that twin XL is generally best for taller people. There is no difference in the width measurement (38 inches, sometimes 39 inches), so both bed sizes are only suited for single sleepers and are not recommended for couples.

Find Your Mattress

Answer 5 Easy Questions To Discover Your Perfect Mattress

What position do you sleep in?

  • Side icon


    You normally wake up sleeping on your side

  • Back icon


    You normally wake up sleeping on your back

  • Stomach icon


    You sleep lying flat on your stomach

Do you experience any pain while sleeping?

  • Back and / or Side Pain icon

    Back and / or Side Pain

    I often have back and/or side pain after waking up and into the day

  • Neck and / or Shoulder Pain icon

    Neck and / or Shoulder Pain

    I often have neck and/or shoulder pain after waking up and into the day

  • Little to No Pain icon

    Little to No Pain

    I rarely experience any pain from sleep

Do you have any material preferences?

  • Innerspring icon


    I prefer a more traditional coil-based mattress

  • Foam icon


    I prefer a coil-less design made of memory foam, latex, and fabric.

  • No preference/ Other icon

    No preference/ Other

    I don't mind any material as long as I feel good sleeping

Do you sleep hot?

  • Yes icon


    You tend to heat up at night and wake up sweaty often

  • No icon


    You never have issues being too hot during the night

Do you sleep with a partner?

  • Yes icon


    We'll recommend beds that have superior motion isolation to account for partner movement during the night

  • No icon


    Motion isolation is less of a factor in our mattress recommendations

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TwinTwin XL
Dimensions38” wide, 75” long38” wide, 80” long
Surface Area2,850 square inches3,040 square inches
Best ForSingle sleepers under 6′ tallSingle sleepers over 6′ tall
  • Cheaper than Twin XL
  • Accessories, sheets, bed frames, etc. are more widely available
  • 5” extra length accommodates taller people
  • Same length as a Queen mattress
  • Only 75” long; will feel cramped for tall people
  • More expensive (typically ~$100 more than Twin)
  • Can be harder to find accessories in Twin XL size

The key difference between twin and twin XL sizes is length. The width on both models is exactly the same, at 38-39 inches wide, but the length differs by a full 5 inches.

The Twin mattress dimensions (38 inches wide, 75 inches long) are best suited for single sleepers who are under 6 feet tall.

The Twin XL mattress dimensions (38 inches wide, 80 inches long) are best suited for single sleepers who are over 6 feet tall, or growing children and teens that may exceed 6 feet eventually.

The table above provides a quick summary, but there are some other factors to consider.

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, it’s also important to remember that accessories for twin XL may also be more expensive. If you’re 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 (6 feet, 3 inches), 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.

Bedroom Dimensions – Both twin and twin XL are relatively small beds that should fit well in most spaces. With that said, if you live in a small studio apartment, or if your bedroom is on the smaller side, then sticking with a standard twin may help the room feel less cramped.

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