Free Crochet Gauge Converter for Any Hook or Yarn

Crochet gauge changes when you switch hook size, yarn weight, or tension. A pattern written for 16 stitches per 4 inches will come out a different size if you naturally crochet at 14 stitches per 4 inches. The finished width changes, and if you are making a garment, bag, or fitted item, that difference adds up fast.

The converter uses a simple ratio: your gauge divided by the pattern gauge. That ratio is applied to every stitch count and row count in the pattern, so the finished dimensions stay the same even with a different gauge.

Row gauge matters for height. Many crocheters only check stitch gauge, but if your row gauge is also off, the item will be taller or shorter than intended. Measure both from your swatch before starting any project where height matters.

Yarn substitution is the most common reason to convert gauge. If a pattern calls for worsted weight but you want to use DK, swatch with the DK and measure your actual gauge. Enter those numbers here along with the pattern stitch and row counts to get the adjusted numbers.

The result shows the adjusted stitch count, row count, and the finished dimensions you can expect at your gauge. If the finished size matches the pattern size, you have the right adjustment. If it does not, recalculate or adjust your hook size and swatch again.

Some patterns have stitch repeats that the adjusted count must divide evenly into. After converting, check whether the adjusted stitch count is a clean multiple of the repeat. Round up or down as needed, then re-verify the expected finished width.