If you have an 8ft rectangular table (96 inches long), and you want to use a rectangular tablecloth, a 90x156 inches tablecloth would be appropriate. The "drop" refers to the length of the tablecloth that hangs over the edge of the table. In this case, with a drop of 6 inches, the tablecloth would extend 6 inches beyond the edge of the table on all sides. To calculate the total dimensions of the tablecloth, you can add the drop length to both the length and width of the table: Length: 96 inches (table length) + 6 inches (drop length on each end) + 6 inches (extra length on each end) = 108 inches Width: 30 inches (table width) + 6 inches (drop length on each side) + 6 inches (extra width on each side) = 42 inches Therefore, a 90x156 inches tablecloth with a 6-inch drop would cover an 8ft rectangular table with a little extra length and width for a nice drape. For more information, please visit https://www.cvlinens.com/collections/table-runners