Enter your knitting gauge and the size you want to make. The calculator gives the stitches to cast on and the rows to work.
How it works
Gauge is your stitches and rows per 4 inches. Multiply your desired width by the stitches-per-inch (gauge divided by 4) to get the cast-on count, and do the same with rows for the length. Always swatch first so the gauge is real.
See the Understanding Gauge and the Gauge Formula.
