The Pinwheel Quilt Block is a simple four-patch quilt block made from four half square triangles (HSTs). This basic quilt block is made from two fabrics and is a fast and easy quilt block, perfect for beginners. You can make quilts using only the pinwheel quilt block, or combine it with other quilt blocks to make a statement.
You can make the pinwheel quilt block almost any size. It’s easy to calculate the fabric. Here is a fabric calculator to help with some standard quilt block sizes. Take your finished block size, divide in half to determine the 4 half square triangles you’ll need. For each half square triangle, take the finished size plus 7/8″. Cut two squares from each fabric.
Browse through more free quilt patterns on Create Whimsy.