Bed Sizes & Mattress Dimensions
Every standard mattress size with exact measurements, minimum room sizes, and help choosing the right fit.
Mattress Size Chart
| Size | Dimensions (in) | Dimensions (cm) | Best For | Price Range |
|---|---|---|---|---|
| Twin | 38" × 75" | 96 × 190 cm | Kids, single adults in small rooms | $200–$600 |
| Twin XL | 38" × 80" | 96 × 203 cm | Taller teens, college dorms, adjustable bases | $250–$700 |
| Full / Double | 54" × 75" | 137 × 190 cm | Single adults, guest rooms, teen rooms | $300–$900 |
| Queen | 60" × 80" | 152 × 203 cm | Couples, most popular size. Fits most bedrooms | $400–$1,500 |
| King | 76" × 80" | 193 × 203 cm | Couples who want space, co-sleeping families | $500–$2,000 |
| California King | 72" × 84" | 183 × 213 cm | Tall sleepers (6'2"+), narrow bedrooms | $500–$2,000 |
| Split King | 76" × 80" (2 TXLs) | 193 × 203 cm | Couples with different firmness needs, adjustable bases | $800–$3,000 |
Minimum Room Sizes
We recommend at least 24 inches of walking space around three sides of the bed, plus room for a nightstand.
Twin / Twin XL
7' × 10' min (70 sq ft)
Fits in most rooms with walking space
Full
9' × 10' min (90 sq ft)
Tight with furniture, OK for single
Queen
10' × 10' min (100 sq ft)
Standard master, allows nightstands
King / Cal King
12' × 12' min (144 sq ft)
Spacious master, room for furniture
Which Size Should You Choose?
Single adult → Queen (most versatile, fits standard rooms)
Couple → Queen minimum, King if room allows (each person gets 30" width with Queen vs. 38" with King)
Tall sleeper (6'2"+) → California King for extra 4" length vs. standard King
Different firmness needs → Split King (two Twin XLs) so each partner can customize
Kids/teens → Twin or Twin XL (XL for future-proofing growth spurts)
Guest room → Full or Queen depending on room size and expected guests
Shop by Size
Picked a size? These roundups cover the models we recommend in each.