A fat quarter is a quarter-yard cut of fabric that is frequently used in quilting fabrics. It is called a fat quarter because it is wider than the typical quarter-yard cut, which is long and thin at 9 inches by the width of the fabric. A fat quarter is cut into a square shape that measures approximately 18 by 22 inches when the fabric is cut by yards or 50 by 55 centimeters when cut by meters. The size of a fat quarter may vary slightly based on the width of the fabric, but it is typically around 18 by 22 inches. A fat quarter is a useful cut of fabric because it provides extra width without needing to purchase a larger amount of fabric. It is also a popular pre-cut piece of fabric available today and is sold in bundles by many fabric manufacturers.