Fabric is purchased in different measurements for quilting. One common measurement for quilting purposes is the "Fat Quarter". A fat quarter of fabric is 1/2 the width of the fabric (usually about 22 inches) by a 1/2 yard of length or 18 inches. A piece of cotton measuring 18" x 22" inches is what is generally referred to by the term Fat Quarter. Many quilts typically use 20 of these Fat Quarters in their design of the top or front side