How to Measure Fabric
Correction: A 1/4 of a yard is a 9 x 44" cut. a fat quarter (FQ) is approximately 18 x 22 inches - half of a 1/2 yd. cut specifically to get a wider useable piece of fabric for quilting.
All fabric is measured by the yard. Fabric is delivered to stores on things called bolts. 1/4 of a yard of fabric is called a fat quarter.