| USA Bed and Mattress Dimensions |
| Width | Length | Space Per Person | Comments |
| Standard Bunk Bed Size | 39" | 75" | 39" x 75" | Small, for one adult or child; good selection for school-age children; upper and lower |
| Narrow Bunk Bed Size | 36" | 75" | 36" x 75" | Small, for one child; good selection for pre-teens; upper and lower |
| Twin Bed Size / Single Bed Size | 39" | 75" | 39" x 75" | Small, for one adult; good selection for guest accommodations |
| Twin Extra Long Bed Size | 39" | 80" | 39" x 80" | Bed linens can be difficult to locate and purchase |
| Full Bed Size/ Double Bed Size | 54" | 75" | 27" x 75" | Wide enough for a large adult or two small adults |
| Queen Bed Size | 60" | 80" | 30" x 80" | Best selection for two adults but possibly too small for some |
| California Queen Bed Size | 60" | 84" | 30" x 84" | 4 inches longer than standard Queen |
| Expanded Queen Bed Size | 66" | 80" | 33" x 80" | 6 inches wider than standard Queen |
| Super Queen Bed Size | 66" | 80" | 33" x 80" | 6 inches wider than standard Queen, also thicker |
| King Bed Size | 76" | 80" | 38" x 80" | Standard King |
| California King Bed Size | 72" | 84" | 36" x 84" | Not as wide but longer than a standard King |
| Grand King Bed Size | 80" | 98" | 40" x 98" | For really large and tall people |
| UK Bed And Mattress Sizes |
| Width | Length | Space per person | Comments |
| Single Bed Size | 36" | 75" | 36" x 75" | Small, for one adult; good selection for guest accommodations |
| Bunk Bed Size | 36" | 75" | 36" x 75" | Small, for one adult or child; upper and lower |
| Double Bed Size | 54" | 75" | 27" x 75" | Wide enough for a large adult or two small adults |
| King Bed Size | 60" | 78" | 30" x 78" | |
| Super King Bed Size | 72" | 78" | 36" x 78" | |
