Crochet Gauge Calculator

YARN & KNITTING

Enter your crochet gauge and the finished size you want. The calculator returns the foundation chain stitches and the number of rows.

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Foundation stitches
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Rows to work
Foundation stitches = width times (stitches per 4 in, divided by 4). Rows = length times (rows per 4 in, divided by 4).

How it works

Crochet gauge is your stitches and rows across 4 inches. Multiply the desired width by the stitches per inch to size the foundation chain, and the desired length by the rows per inch for the row count. Add a turning chain as your stitch requires.

Count the foundation. The foundation chain sets the width of the whole piece. Count it carefully, and remember some stitches need extra chains for the turning chain.

See the Crochet Hook Size Chart and the Beginner Crochet Guide.

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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.