One yard long X 60" wide = 1 fabric yard.

There are 2160 Sq. inches in a fabric yard.

1) Weigh your total piece of fabric. Down to the ounce if you can.

2) Then measure the entire length of the fabric in inches. Then measure the width in inches.

3) Multiply the length by the width. This will give you the total sq. inches of fabric that you have.

4) Then divide by 2160. This will give you the amount of fabric you have in fabric yards.

5) Divide the weight in oz. by the fabric yards and you get the ounces per yard.