Twin XL Size Chart
A twin XL mattress measures 38 × 80 inches — the same width as a twin but five inches longer. Use the fit checker to compare twin XL with other sizes, see whether it fits your room with space to walk around, and check that sheets and toppers match your mattress depth.
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Twin XL fit checker
Dorm & Bedroom Planning Kit
Printable bed size chart with twin XL, a dorm room packing checklist, a to-scale room planning grid with furniture cut-outs and a bedding size shopping list.
- Bed size chart (PDF)
- Dorm checklist (PDF, DOCX)
- Room planning grid (PDF)
- Bedding shopping list (PDF, DOCX, XLSX)
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Printable Bedding Shopping ListTwin XL dimensions
| Measure | Twin XL | Twin |
|---|---|---|
| Width | 38 in (97 cm) | 38 in (97 cm) |
| Length | 80 in (203 cm) | 75 in (191 cm) |
| Area | 3,040 sq in (21.1 sq ft) | 2,850 sq in (19.8 sq ft) |
| Typical use | College dorms, tall teens and adults, split king | Children, bunk beds, small rooms |
Twin XL is the only “single” size that matches the 80-inch length of queen and king beds, which is why it suits taller sleepers. Two twin XL mattresses side by side measure 76 × 80 inches — exactly the size of a standard US king — which is how split king beds work.
Twin XL vs other mattress sizes
| Size | Inches | Centimetres | Sleeps |
|---|---|---|---|
| Twin | 38 × 75 | 97 × 191 | One child or small adult |
| Twin XL | 38 × 80 | 97 × 203 | One adult, including tall sleepers |
| Full / double | 54 × 75 | 137 × 191 | One adult with room, or two snugly |
| Queen | 60 × 80 | 152 × 203 | Two adults |
| King | 76 × 80 | 193 × 203 | Two adults with plenty of room |
Who a twin XL suits
- College students — most US college dorms use twin XL beds, so twin XL sheets are a standard back-to-school item.
- Tall teens and adults — the extra 5 inches helps anyone over about 5 ft 10 in.
- Small rooms and studios — full length without the width of a full bed.
- Split king setups — two twin XLs let partners choose different firmness or use adjustable bases.
- Guest rooms — two twin XLs can be pushed together or kept separate.
Twin XL bedding
Regular twin fitted sheets are 5 inches too short for a twin XL, so buy sheets labelled twin XL. Check the fitted sheet’s pocket depth against your mattress plus any topper — a 12-inch mattress with a 2-inch topper needs at least a 14-inch pocket, and deep-pocket sheets of 15–16 inches stay on more securely. Twin comforters and flat sheets often work on twin XL beds, but twin XL versions give better coverage. Mattress protectors and toppers must match the 80-inch length.
Room size for a twin XL
A twin XL fits in a room as small as about 7 × 10 feet, but most people prefer at least 30 inches of clear space along the open side and at the foot for walking and making the bed. A room of about 9 × 10 feet feels comfortable with a small desk or dresser. In shared dorm rooms, lofting or raising the bed frees floor space underneath for storage or a desk.
Worked example
A student’s room measures 11 × 12 feet, and they want 30 inches of clearance. The fit checker shows every size up to a king fits with that clearance, so the twin XL leaves plenty of floor space for a desk and dresser. Their mattress is 12 inches deep and they plan a 2-inch topper, so they buy twin XL fitted sheets with a 15-inch pocket rather than standard 12-inch sheets that would slip off the corners.
Bed frames and headboards
Twin XL mattresses need a frame or foundation of the same length; a standard twin frame is too short. Many metal platform frames adjust between twin and twin XL. Headboards for twin beds usually fit twin XL because the width is the same. If you are replacing only the mattress, measure the frame first.
Twin XL mattress types and depths
| Type | Typical depth | Notes |
|---|---|---|
| Dorm vinyl mattress | 5–7 in | Wipe-clean; many students add a topper |
| Memory foam | 8–12 in | Popular for tall sleepers and small spaces |
| Innerspring | 8–12 in | Bouncy and cooler |
| Hybrid | 11–14 in | Needs deep-pocket sheets |
| Adjustable-base compatible | Varies | Used in split king setups |
Mattress depth matters for bedding and for bunk or loft beds, where a thick mattress reduces the height of the guard rail. Check the bed maker’s maximum mattress thickness before buying.
Twin XL in other countries
Mattress sizes differ internationally. A UK single is about 90 × 190 cm and a European single is often 90 × 200 cm — close to twin XL in length but slightly narrower. An Australian long single is about 92 × 203 cm, almost the same as a US twin XL. When buying sheets abroad, compare the measurements in centimetres rather than the size name.
Buying tips for dorm bedding
- Confirm the bed size with the college’s housing office — most are twin XL, but not all.
- Buy two sets of sheets so one can be washed while the other is on the bed.
- A waterproof twin XL mattress protector keeps a shared mattress clean.
- Measure the gap under a raised bed before buying storage bins.
- Label bedding with the student’s name for shared laundry rooms.
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Frequently asked questions
What are the dimensions of a twin XL mattress?
38 × 80 inches (about 97 × 203 cm).
Do twin sheets fit a twin XL?
Fitted sheets do not — they are 5 inches too short. Flat sheets and comforters may work but twin XL sizes fit better.
Do two twin XLs make a king?
Yes, together they measure 76 × 80 inches, the size of a standard US king.
Why do colleges use twin XL?
The extra length suits adult students while the narrow width fits small shared rooms.
Is a twin XL the same as a single?
In the US, “single” usually means a standard twin (38 × 75 in); twin XL is 5 inches longer at 80 inches.
Will a twin comforter fit a twin XL?
Usually yes, since the width is the same, though a twin XL comforter covers the extra length better.
What size room do I need for a twin XL?
At least about 7 × 10 ft; around 9 × 10 ft is comfortable.
Is my data stored?
No, it runs in your browser.