If you’re shopping for a new bed, especially for a dorm room or a small space, you’ve probably asked: what is the size of an extra long twin mattress? It’s a specific and common size, and getting the dimensions right is crucial for buying sheets, bed frames, and planning your room layout.
This guide will give you the exact measurements, compare it to other beds, and help you choose the right accessories. We’ll cover everything you need to know to make a smart purchase.
What Is The Size Of An Extra Long Twin Mattress
An extra long twin mattress, often called an XL twin, has standard dimensions of 38 inches wide by 80 inches long. This makes it the same width as a regular twin mattress but 5 inches longer. The extra length is the key feature that sets it apart.
This size is designed primarily for taller individuals, especially teenagers and adults. It’s the most common bed size found in college dormitories across the United States, as it provides more legroom without taking up excessive floor space. If your looking for a bed that’s longer than standard but not as wide as a full, this is the perfect compromise.
Standard Extra Long Twin Dimensions in Detail
Let’s break down the numbers more clearly:
- Width: 38 inches (3 feet, 2 inches)
- Length: 80 inches (6 feet, 8 inches)
- Total Surface Area: 3,040 square inches (about 21.1 square feet)
It’s important to remember that these are the dimensions of the mattress itself. The overall footprint of the bed, including a frame or headboard, can be slightly larger. Always measure your space with the frame in mind.
Extra Long Twin vs. Regular Twin: Spot the Difference
The regular twin mattress measures 38 inches by 75 inches. As you can see, the width is identical. The only difference is the length. Those extra 5 inches in the XL model make a significant difference for anyone over about 6 feet tall.
For a child or a shorter adult, a regular twin is often sufficient. But for growing teenagers or college students, the extra long twin prevents feet from hanging off the edge, ensuring a much more comfortable night’s sleep.
Comparing to Other Common Mattress Sizes
To really understand the XL twin, it helps to see it in context with other beds.
- Full (Double): 54″ x 75″. A full mattress is 16 inches wider than an XL twin but 5 inches shorter. It offers more sleeping width for one person or cozy space for two, but less length.
- Twin XL vs. Full: The choice here is between more width (Full) or more length (Twin XL). For tall single sleepers, the length is often more valuble than the width.
- Queen: 60″ x 80″. A queen mattress is both wider and the same length as an XL twin. It’s a popular choice for couples or master bedrooms.
- King: 76″ x 80″. A standard king is exactly twice the width of an XL twin and the same length.
Who is the Extra Long Twin Mattress Best For?
This mattress size isn’t for everyone, but it’s ideal for specific situations. Here’s who benefits the most:
- College Students: This is the primary audience. Most university dorms are furnished with extra long twin beds to accommodate a diverse student body, including tall athletes.
- Tall Teenagers and Adults: Anyone over 6 feet tall will appreciate the additional legroom compared to a standard twin.
- Guest Room & Small Spaces: It’s a smart choice for a spare room where you want to maximize floor space but still offer a comfortable bed for guests of any height.
- Kids Who Are Growing Quickly: Investing in an XL twin for a child’s room future-proofs the space, avoiding another mattress purchase in a few years.
- Budget-Conscious Shoppers: It’s typically more affordable than a full or queen mattress, and the bedding, while specialized, is widely available.
Shopping for Extra Long Twin Bedding and Frames
One of the most common mistakes is buying the wrong size sheets. Because of its unique length, an extra long twin requires specific bedding.
Finding the Right Sheets and Mattress Protectors
You must look for labels that explicitly say “Twin XL,” “Extra Long Twin,” or dimensions “38 x 80.” Regular twin sheets (38 x 75) will be too short and will not stay on the mattress securely. Most major retailers and online stores carry a wide selection of Twin XL sheet sets, including fitted sheets, flat sheets, and pillowcases.
The same rule applies to mattress protectors and pads. Ensure they are designed for the 80-inch length to get full coverage.
Choosing a Bed Frame or Foundation
Your extra long twin mattress needs proper support. You have several options:
- Adjustable Metal Frame: These are common, affordable, and often sold as “Twin XL” frames. They usually fold for easy moving.
- Platform Bed: Many platform beds come in Twin XL size. They offer a modern look and eliminate the need for a box spring.
- Box Spring: If your bed frame requires a box spring, you must purchase a Twin XL box spring. A regular twin box spring will be 5 inches too short.
- DIY or Lofted Frames: In dorms, lofting the bed is popular to create space underneath for a desk or seating. Ensure the loft kit is rated for the Twin XL size and weight.
Pros and Cons of an Extra Long Twin Mattress
Before you decide, weigh these advantages and disadvantages.
Advantages
- Perfect for Tall People: The main benefit is clear: no more cramped sleeping.
- Space-Efficient: It fits well in narrow rooms, dormitories, and small apartments where every inch counts.
- Widely Available: As a standard size, it’s easy to find from most mattress manufacturers and retailers.
- Cost-Effective: Generally less expensive than larger sizes like full or queen.
Disadvantages
- Limited Width: At 38 inches wide, it’s only meant for one sleeper. It can feel narrow for adults who move around alot.
- Specialized Bedding: You cannot use regular twin sheets, which can be slightly more expensive or harder to find in certain styles.
- Not Ideal for Couples: It is not designed for two people to share comfortably.
Measuring Your Space and Planning Layout
Don’t just order a mattress online without checking your room. Here’s a simple step-by-step guide:
- Clear the Area: Move any furniture away from where the bed will go.
- Measure the Mattress Footprint: Use a tape measure to mark 38 inches (width) and 80 inches (length) on the floor with painter’s tape.
- Add Space for the Frame: Add at least 2-5 inches to each side for the bed frame or rails.
- Check Walkways: Ensure there is at least 24 inches of walking space on at least one side of the bed and at the foot.
- Consider Door Swings: Make sure doors (closet, bedroom, bathroom) can open fully without hitting the bed.
Remember to also measure hallways and stairwells to ensure you can get the mattress into the room. An 80-inch long mattress can be tricky to maneuver in tight spaces.
FAQs About Extra Long Twin Mattresses
Can I use regular twin sheets on an extra long twin mattress?
No, you cannot. Regular twin sheets are designed for a 75-inch long mattress. They will be too short and will not stay securely on an 80-inch extra long twin mattress. You must use sheets labeled specifically for Twin XL or 38″ x 80″.
Is a twin XL the same as a full?
No, they are different sizes. A twin XL (38″ x 80″) is narrower but longer than a standard full mattress (54″ x 75″). A full offers more width but less length.
How tall should you be for a twin XL?
There’s no strict rule, but the extra long twin is generally recommended for individuals over 6 feet tall. It provides crucial extra legroom that a standard 75-inch long mattress lacks. Anyone who finds their feet pressing against the footboard of a regular bed will benefit.
Do all colleges use extra long twin beds?
While not absolutely universal, the vast majority of colleges and universities in the U.S. use extra long twin beds in their dormitories. It’s the standard. Always check with your specific school’s housing department to be certain before buying bedding.
Can two people sleep on a twin XL?
It is not recommended. At only 38 inches wide, a twin XL provides just 19 inches of space per person if shared, which is not condusive to comfortable sleep. It is designed for a single sleeper.
What is the price range for an extra long twin mattress?
Prices vary widely based on material (innerspring, memory foam, hybrid) and brand. You can find basic models starting around $150-$250, while high-end memory foam or organic models can cost $800 or more. They are usually priced slightly above a regular twin but below a full-size mattress.
Final Tips Before You Buy
Now that you know the answer to “what is the size of an extra long twin mattress,” you’re ready to shop confidently. Keep this checklist in mind:
- Double-check that the product listing says “Twin XL” or “38 x 80.”
- Plan your bedding purchase at the same time as your mattress to ensure you have the correct sheets on day one.
- If buying for a dorm, see if the school requires a specific type of fire-retardant mattress or has rules about bed risers.
- Read reviews from other tall users to see if a particular mattress model provides adequate support and comfort for your height and weight.
- Consider the mattress material—memory foam can sleep warmer, while innerspring offers more bounce. Latex is durable and responsive.
Choosing the right mattress size is a fundamental step in creating a comfortable sleeping environment. For many people in tight quarters or those who need the extra length, the extra long twin mattress is a practical and smart solution that balances comfort with spatial efficiency. By understanding its dimensions and requirements, you can ensure a perfect fit for your room and a restful night’s sleep.