To cover a 60-inch round table you ideally need a tablecloth that measures 120 inches in diameter. This provides a nearly-floor-touching drop of about 30 inches all around the table, giving a table a formal and tailored look. A long drop not only adds a decorative element but also helps to protect the table’s surface. If you prefer a shorter overhang for a more casual look, you could use a 90-inch round tablecloth, which would provide a 15-inch overhang all around the table. Overall, what size tablecloth you choose depends on your overhang length preference.