Twin Mattresses
38″ × 75″
Also called a single mattress
Keep more floor space in a smaller bedroom. Compare the length with Twin XL before you choose.
Shop TwinA little more legroom. A lot more room to relax. Find the mattress size that fits your space, your sleep, and your life.
Shop Twin through California King at Carson Mattress Outlet in Carson City & Reno.
Two local stores. One better night’s sleep.
Make room for your kind of comfortable.
The interactive previews need JavaScript. You can still shop all six sizes and use the complete size chart below.
Start with the dimensions. Then explore the mattresses in your size.
38″ × 75″
Also called a single mattress
Keep more floor space in a smaller bedroom. Compare the length with Twin XL before you choose.
Shop Twin38″ × 80″
Twin width. Five extra inches of length.
The same width as a Twin, with 5 extra inches of length. A useful option when length matters more than width.
Shop Twin XL54″ × 75″
Full and Double are the same size
A wider option for one sleeper, with the same length as a Twin. Full and Double name the same mattress size.
Shop Full / Double60″ × 80″
A balance of sleep space and floor space
Compare this 60-inch-wide option with a Full or King to find the balance between sleeping space and room space.
Shop Queen76″ × 80″
Also called an Eastern King mattress
Add 16 inches of width over a Queen, without adding length. Measure for your frame, nightstands, and walkways.
Shop King72″ × 84″
California King mattress
Four inches longer and four inches narrower than a standard King. A different shape, not a wider mattress.
Shop Cal. KingMetric dimensions are rounded to 0.1 cm.
Width × length. Dimensions are nominal; actual measurements can vary by manufacturer. Compare the specific mattress and frame before ordering. Size filters are browsing shortcuts, not a fit guarantee.
Queen or King? Twin or Twin XL? Compare any two sizes, side by side.
Same scale · Width × length · Nominal dimensions
Compared with Queen, King is 16 inches wider and the same length.
Size is only one part of comfort. Try the feel in store before you decide.
| Mattress size | Width | Length | Also known as | Browse |
|---|---|---|---|---|
| Twin | 38 in | 75 in | Single | Shop Twin |
| Twin XL | 38 in | 80 in | — | Shop Twin XL |
| Full / Double | 54 in | 75 in | Double | Shop Full / Double |
| Queen | 60 in | 80 in | — | Shop Queen |
| King | 76 in | 80 in | Eastern King | Shop King |
| Cal. King | 72 in | 84 in | California King | Shop Cal. King |
Enter your room dimensions to preview the mattress footprint and the space left around it.
The static example shows a Queen mattress in a 10-by-12-foot room. Enable JavaScript to change the measurements.
Planning estimate only. This checks a rectangular footprint, not whether your layout is usable or accessible. Allow for furniture, doors, closets, and walkways. Confirm your actual frame dimensions.
Queen footprint fits the entered room.
Centered widthwise, with the head against the back wall. Mattress only; no bed-frame allowance added.
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A little clarity before you buy your new mattress.
Ask your local teamYes. Full and Double refer to the same nominal mattress size: 54 inches wide by 75 inches long. You can shop both names in our Full/ Double collection. Shop Full/ Double mattresses.
A standard King, also called an Eastern King, measures 76 by 80 inches. A California King measures 72 by 84 inches. King is 4 inches wider; California King is 4 inches longer. California King is not the wider option.
Twin and Twin XL are both 38 inches wide. A Twin is 75 inches long, while a Twin XL is 80 inches long: 5 extra inches of length.
Two nominal 38-by-80-inch Twin XL mattresses placed side by side create a 76-by-80-inch footprint, matching a standard King. Check mattress, frame, adjustable-base, and bedding compatibility before purchasing. Two regular Twins are shorter and do not match a standard King footprint. Explore foundations and adjustable bases.
Measure the room and your actual bed frame, then allow space for doors, closets, nightstands, other furniture, and the paths you use. Our room tool previews the footprint only. Compare mattress sizes and visit a showroom to see how much sleeping space feels right.
Free local delivery and free disposal of an old mattress are offered on eligible purchases. Purchase minimums, delivery type, service areas, and removal restrictions apply. Review our Delivery Terms and call your local store to confirm eligibility. Read Delivery Terms.
Visit a local showroom, try a few mattresses, and talk through your options.
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Saturday–Sunday 10am–5pm
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*Free Local Delivery and Free Disposal Of Old Mattress apply to eligible purchases and service areas. Purchase minimums and restrictions apply. Read Delivery Terms. Payment offers are subject to approval and provider terms. View Payment Options.
Mattress dimensions are nominal width × length; actual products may vary. Collection links show current products and pricing. In-store availability should be confirmed with your local store.