A tablecloth size chart is a chart that recommends the proper size tablecloth based on the table's size. The charts specify how much overhang the tablecloth will have based on round, square and rectangular tables.
Round tablecloths are measured in inches, with common sizes measuring 70, 78, 90, 108, 120 and 132 inches in diameter. The tablecloth sizing chart lists the table's diameter with the tablecloth's diameter and lists how much overhang the tablecloth will feature. Most tables measure about 30 inches from the floor, so any additional overhang will be too long. To determine the proper tablecloth size for a round table and determine the overhang, subtract the table's diameter from the tablecloth's diameter and divide by two.
Square tablecloths are also measured in inches, with common sizes measuring 54, 70 and 85 inches. Determining the proper tablecloth size is the same process as the round tablecloths. Subtract the table's length from the tablecloth's size and divide by two, which determines the cloth's overhang.
Rectangular tablecloths feature different lengths and widths, so the cloth's overhang can also have different lengths and widths, depending on the chosen size. To determine the proper size, subtract the table's length from the cloth's length as well as the table's width from the cloth's width, and then divide those numbers by two.