Mattress Sizes:
| Length | Width | Height | |
| Twin | 75″ | 39″ | 10.5″ |
| Twin X-Long | 80″ | 39″ | 10.5″ |
| Full | 75″ | 54″ | 10.5″ |
| Queen | 80″ | 60″ | 10.5″ |
| King | 80″ | 76″ | 10.5″ |
| California King | 84″ | 72″ | 10.5″ |
| Split King (2 Twin XL) | 80″ | 78″ | 10.5″ |
Metric to U.S. Conversion:
For measuring purposes, the exact conversion is as follows:
1 inch is equal to exactly 2.54 centimeters.
1 foot is equal to 30.48 centimeters.
1 meter is equal to 39.37 inches.