The tablecloth will need to cover the table and reach the floor. For example, a rectangular table that is 70" wide and 180" long will need a tablecloth that is 128" wide and 238" long. [1] X Research source
Both ends of the table should have an equal length of cloth. The lower edges of the tablecloth should either be touching or just above the floor.
The front side of the cloth should barely touch the floor. An unleveled front edge can make the rest of the table boxing unleveled in turn.
It may be helpful to hold the rest of the cloth in place with your thighs by standing against the table. Pull the cloth tight in order to get a good, crisp line in the fabric. Keep the corner of the table in a straight line, matching the edge of the table.
The corner should end in the front and center of the table top. Don’t worry if it looks messy at this point. There is still time to fix the tablecloth. Make sure the cloth was pulled tightly to ensure a clean fold.
The bottom of the tablecloth should be level with the floor. Try to have the bottom edge of the tablecloth touching or placed just above the floor.
Try gently waving the top section of cloth to work out folds or wrinkles. Pull the cloth slightly to fix areas where the cloth bunched up. Remember to keep the lower sides of the tablecloth level with the ground.
It’s a good idea to hold the right corner of the tablecloth in place while you fold the top over to meet it. Don’t worry if the edge doesn’t line up, you can still make adjustments.