Bed and mattress sizes
The six standard US mattress sizes from the Sleep Foundation, with the floor space each needs (24 inches around the bed) and the rug that suits it.
Twin bed dimensions A twin mattress is 38 x 75 inches (97 x 190 cm), or 3' 2" by 6' 3".
Twin XL bed dimensions A twin xl mattress is 38 x 80 inches (97 x 203 cm), or 3' 2" by 6' 8".
Full (double) bed dimensions A full (double) mattress is 54 x 75 inches (137 x 190 cm), or 4' 6" by 6' 3".
Queen bed dimensions A queen mattress is 60 x 80 inches (152 x 203 cm), or 5' by 6' 8".
King bed dimensions A king mattress is 76 x 80 inches (193 x 203 cm), or 6' 4" by 6' 8".
California King bed dimensions A california king mattress is 72 x 84 inches (183 x 213 cm), or 6' by 7'.
Size chart
| Size | Inches | Centimeters | Room with 24 in around |
|---|---|---|---|
| Twin | 38 x 75 | 97 x 191 | 86 x 99 in |
| Twin XL | 38 x 80 | 97 x 203 | 86 x 104 in |
| Full (double) | 54 x 75 | 137 x 191 | 102 x 99 in |
| Queen | 60 x 80 | 152 x 203 | 108 x 104 in |
| King | 76 x 80 | 193 x 203 | 124 x 104 in |
| California King | 72 x 84 | 183 x 213 | 120 x 108 in |
A king is 16 inches wider than a queen at the same length. A California king trades 4 inches of width for 4 more inches of length. Two twin XL mattresses side by side match a king.
Measure before you buy
Typical sizes are a guide. Before ordering, measure your room and every doorway, hall and stair on the way in, mark the piece's footprint on the floor with painter's tape, and compare with the maker's listed dimensions for the exact model. Our fit calculators check rug sizes, doorways, stool heights and dining table space for you.
Every number on this site is taken from a named, linked guide. Read how we check.