Mattress Size Guide
Exact dimensions, room requirements, and who each size is best for — so you buy the right size the first time.
Twin
38" × 75"
Kids, bunk beds, small rooms
Area
2,850 in²
Twin XL
38" × 80"
Dorms, tall adults, adjustable bases
Area
3,040 in²
Full / Double
54" × 75"
Solo sleepers, guest rooms
Area
4,050 in²
Queen
60" × 80"
Most popular — couples & solo
Area
4,800 in²
King
76" × 80"
Couples wanting maximum space
Area
6,080 in²
California King
72" × 84"
Taller sleepers, narrower rooms
Area
6,048 in²
Split King
38" × 80" × 2
Adjustable bases, different feels
Area
6,080 in²
Size Comparison at a Glance
| Size | Width × Length | Sleepers | Min. Room Size |
|---|---|---|---|
| Twin | 38" × 75" | 1 (child) | 7′ × 10′ |
| Twin XL | 38" × 80" | 1 (tall adult) | 8′ × 10′ |
| Full | 54" × 75" | 1 (adult) | 9′ × 10′ |
| Queen | 60" × 80" | 1–2 | 10′ × 10′ |
| King | 76" × 80" | 2 | 12′ × 10′ |
| California King | 72" × 84" | 2 (tall) | 12′ × 10′ |
| Split King | 38" × 80" × 2 | 2 (diff. needs) | 12′ × 10′ |