Twin XL Mattress Dimensions
The twin XL mattress measures 38 inches wide by 80 inches long, making it 5 inches longer than a standard twin. It's the standard size used in college dormitories and a good choice for taller single sleepers.
How big is a twin XL mattress?
A twin XL mattress is 38 inches wide and 80 inches long — 5 inches longer than a standard twin. It's the standard mattress in college dorms.
Dimensions
Doorway Fit Analysis
Will a Twin XL Mattress fit through a standard doorway?
Will fit through with proper technique
- •Smallest dimension (thickness): 10"
- •Standard interior door: 32"
- •Standard exterior door: 36"
Fits with room to spare
Fits with room to spare
Fits with room to spare
Mattress Size Comparison
| Size | Width | Length | Area |
|---|---|---|---|
| Twin | 38" | 75" | 2,850 sq in |
| Twin XL ← | 38" | 80" | 3,040 sq in |
| Full/Double | 54" | 75" | 4,050 sq in |
| Queen | 60" | 80" | 4,800 sq in |
| King | 76" | 80" | 6,080 sq in |
| Cal King | 72" | 84" | 6,048 sq in |
Frequently Asked Questions
Will a twin XL mattress fit through a standard doorway?
Yes. At 38" × 80" × 10", the twin XL passes through a standard 32" door easily when turned on its side — the 10" thickness fits with plenty of clearance.
Is twin XL the same length as a queen?
Yes — both twin XL and queen mattresses are 80 inches long. The difference is width: twin XL is 38" wide while a queen is 60" wide.
Can two twin XL mattresses make a king?
Yes. Two twin XL mattresses (each 38" × 80") placed together equal 76" × 80" — the exact dimensions of a king mattress. This is a popular setup for adjustable beds.
Related Mattress Sizes
Related Calculators
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