A clear guide to common U.S. mattress dimensions and how to choose the right size for your room and sleep setup.
Editorial note: Sleep Selective is an independent publication. We do not claim hands-on testing unless a page explicitly says otherwise. Product details, prices and policies can change, so verify current terms with the seller before ordering.
Common U.S. mattress dimensions
| Size | Approx. dimensions | Typical use |
|---|---|---|
| Twin | 38 × 75 in | One sleeper, compact room |
| Twin XL | 38 × 80 in | Taller single sleeper, dorms |
| Full | 54 × 75 in | Roomier single sleeper |
| Queen | 60 × 80 in | Common couples size |
| King | 76 × 80 in | Maximum width for couples |
| California King | 72 × 84 in | Extra length, slightly less width |
Questions to ask before you buy
- Does the firmness make sense for my primary sleep position and body weight?
- Will the construction fit my preference for contouring versus responsiveness?
- Are temperature and partner movement important enough to change the construction I choose?
- What foundation does the manufacturer require?
- What are the current trial, return-fee and warranty terms?
A sensible next step
If you are still defining your needs, use our complete mattress buying guide. If you already know the construction you want, compare our memory foam guide and hybrid guide.
Comparing value-focused options?
EGOHOME currently offers foam and hybrid mattresses in multiple profiles. Check the live catalog for today’s models, sizes and promotions.
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