Determine the type of tablecloth you want. There are two main types of fitted tablecloths: those with elastic and those without. Elastic tablecloths are more forgiving when it comes to measuring, but they may not fit as snugly as a tablecloth without elastic.
Measure the width and length of your table. For round tables, measure the diameter. For square or rectangular tables, measure the length and width.
Add the desired drop to each measurement. The drop is the amount of fabric that will hang over the edge of the table. A typical drop is 6-12 inches, but you can choose a shorter or longer drop depending on your preference.
Round up to the nearest whole inch. When measuring, it is important to round up to the nearest whole inch. This will help to ensure that the tablecloth fits snugly.
Write down your measurements. Once you have measured your table, write down your measurements so that you can refer to them when you are shopping for a tablecloth.