Not sure which mattress size fits your room and lifestyle? Use our interactive room tool, visual size chart, and comparison table to find the right match — without the guesswork.
Select your bedroom dimensions and we'll calculate which mattress sizes fit comfortably — with at least 2 feet of walking clearance on each side and at the foot of the bed.
Each rectangle below is proportionally scaled to real mattress dimensions. Width represents actual width; height represents length.
Full dimensions, ideal sleeper profiles, minimum room requirements, and typical price ranges for all six standard mattress sizes.
| Size | Dimensions | Best For | Min Room Size | Price Range |
|---|---|---|---|---|
| Twin | 38" × 75" | Solo sleepers, kids, bunk beds, small rooms | 7 × 10 ft | $200 – $600 |
| Twin XL | 38" × 80" | Tall singles, college dorms, studio apartments | 7 × 10 ft | $250 – $700 |
| Full / Double | 54" × 75" | Singles who spread out, guest rooms, teens | 10 × 10 ft | $350 – $900 |
| QueenMost Popular | 60" × 80" | Couples, versatile fit for most bedrooms | 10 × 10 ft | $500 – $1,500 |
| King | 76" × 80" | Couples who want space, co-sleeping families | 13 × 10 ft | $800 – $2,500 |
| Cal King | 72" × 84" | Tall sleepers (6'2"+), large master bedrooms | 12 × 12 ft | $900 – $2,800 |
A closer look at each size — who it works best for, when to choose it, and where to shop for it.
The classic single. Perfect for children's rooms, bunk beds, and tight spaces. Leaves enough floor room in even the smallest bedrooms. Not ideal for adults over 6 feet tall.
See Twin mattresses →Same width as a Twin but 5 inches longer — the standard dorm mattress. A great upgrade for tall teenagers or young adults who don't need extra width.
See Twin XL mattresses →16 extra inches of width over a Twin. A comfortable solo sleeper bed and a popular guest room choice. Couples can share it, but may feel cramped over time.
See Full mattresses →America's most popular mattress size — and for good reason. It comfortably fits two people, works in most master bedrooms, and gives each partner 30 inches of personal space.
See Queen mattresses →The widest standard size. Gives couples the most side-to-side room — about 38 inches each, the same as a Twin. Best for families who co-sleep or anyone who craves space.
See King mattresses →Narrower than a King but 4 inches longer — the choice for tall sleepers (6'2"+) in large rooms. Note: Cal King bedding is harder to find than standard King.
See Cal King mattresses →Take our 2-minute quiz to get a personalized recommendation based on your room, sleep style, and budget — or browse our top picks by size.