For a 6-foot long, rectangular table, the recommended tablecloth size is 60” x 90” for a lap-length tablecloth or 90” x 132” for a floor-length tablecloth. These sizes will provide the perfect amount of drop for a stunning effect that everyone will love. It is important to consider the drop of the tablecloth, which refers to the length of the tablecloth that will hang down from the tabletop. Generally, the more formal the event, the more drop your tablecloth should have.