Step on the scale to get your current weight and make a note of it for ordering purposes.
Wear the shoes you will wear with your gown and measure your height with the tape measure. Convert your height to feet and inches, if necessary, by dividing your height in inches by 12 to find the feet and inches.
Measure the circumference of your head just above your eyebrows and write down the measurement.
Consult a sizing chart for the gowns and select a gown that will fit your height and weight. Generally, gowns will fit a large weight range and a smaller height range to ensure gowns with correct length.
Furnish your height (with shoes), weight, gender and head circumference to the graduation gown company when you order your graduation attire. Many graduation caps are "one size fits all," but furnishing your head circumference can help ensure a proper fit.