Knitting Gauge & Yarn Calculator

Work out how many stitches to cast on and how many rows to knit from your gauge swatch and the finished project size, and estimate the yarn you'll need using the swatch method. Enter the gauge (stitches and rows per 10 cm or per 4 inches), the project width and length, and the weight and size of your swatch, and the tool gives the cast-on count, total rows, stitch/row density, and an estimated yarn weight with a safety margin. Pure arithmetic — gauge from a real blocked swatch is the only reliable basis. Everything runs locally in your browser.