The following Chart gives the most common mattress size dimensions in United States, Europe and Asia Region. Dimension of mattresses are in Inches ( Width x Length ) format. You can read more very useful resource: How to choose a mattress at Pain Relief Network
| International Mattress Sizes (Dimensions in inches.) | ||||
| Size | USA & Canada | Europe (UK) | Asia | |
| Twin/Single | 39 × 75 | 36 × 75 | 42 × 78 × 22 | |
| Twin/Single XL | 39 × 80 | |||
| Double/Full | 54 × 75 | 54 × 75 | 48 × 78 × 22 | |
| Double/Full XL | 54 × 80 | |||
| Queen | 60 × 80 | 72 × 75 | ||
| Olympic/Expanded Queen | 66 × 80 | |||
| California Queen | 60 × 84 | |||
| King | 76 × 80 | 60 × 75 | 72 × 78 × 22 | |
| California King | 72 × 84 | |||
| Super King | 72 × 78 | |||
| Grand King | 80 × 98 | |||