Question: how do i calculate how much fabric i need for a pleated skirt?
Answer: Divide your waist measurement by the desired number of pleat. pleat width (25 waist/10 pleats = 2.5”) and you get the finished pleat width for each box pleat. Since each pleat takes 3 times its width in fabric, multiple your waist measurement by 3: 25 x 3 = 75 (the fabric you need to make ten 2.5”-wide box pleats).