How Many Stitches and Rows Will I Need Back to Crochet Me ThatAs an example, from the package gauge on the left, we can see that your Gauge using a size J hook is: 11 stitches = 4 inches and 12 Rows = 4 inches.Take the gauge from your package and enter the following information. Crochet Pattern Calculator Crochet Pattern Calculator Number of Stitches from gauge: Number of Rows from gauge: Number of Inches from gauge: Width you desire for your project (in inches.) Length you desire for your project (in inches.) Calculate If your numbers come out as a decimal, just up or down as needed.