A swatch is a small sample of a bigger project, usually about 4β x 4β, but can be larger, depending on the complexity of the pattern design. Swatch usually has the stitch(es) repeating in the same way/order they would be in the larger, complete project. By using the swatch, you can figure out how many stitches and rows you will have to get the finished correct size you want, the size hook or needle size you need, how much yarn it will take, and more.
