Super King Size Bed Dimensions are 72 inches wide x 78 inches long. These are standard Super King bed measurements. Super King Mattress depths can vary from just a few inches to 16" or more for the new huge pillow tops. Many times, actual super king mattress dimensions will vary by one or two inches, usually smaller. The Super King is rare in the United States but considered a standard size in the UK.
Metric to U.S. Conversion
For measuring purposes, the exact conversion is as follows: