How much fabric do you need to make a 7 foot wide and 7 feet long curtain?

To make a 7-foot wide and 7-foot long curtain, you typically need at least 1.5 to 2 times the width of the window for fullness, which means you'll need about 10.5 to 14 feet of fabric. For length, you'll need the full 7 feet, plus additional fabric for hems and any header, so it's best to add an extra 6 to 12 inches. Therefore, a total of approximately 10 to 15 yards of fabric is recommended, depending on the desired fullness and finishing details.