A fat quarter is a quarter of a yard of fabric which measures 18" x 22" (in other words, 1/2 yard of fabric which is then cut in half parallel with the selvege); a regular quarter of a yard of fabric measure 9" x 44".
Fat quarters are useful as you can cut a larger variety of pieces from them given their "extra" height and allows for more pieces to be cut on the vertical grain of the fabric.
Entered by Michigoose
That Home Site! Home Page | Forums | Quilting Forum