Crochet Hook Size Calculator
Crochet Hook Size
Determine the recommended crochet hook size based on yarn weight, gauge swatch measurements, and desired fabric density.
Formula
Hook (mm) = Base Hook Size + Gauge Adjustment + Density Adjustment; Gauge Adj = (Swatch Stitches - Target Stitches) x 0.25 mm
Frequently Asked Questions
How do I choose a crochet hook size?
Start with the hook size recommended on the yarn label. Make a gauge swatch and adjust up if your stitches are too tight or down if too loose.
Does hook material affect gauge?
Yes. Aluminum hooks tend to produce tighter stitches while bamboo and wood hooks give slightly looser gauge due to friction differences.
What is gauge in crochet?
Gauge is the number of stitches and rows per inch or per 4 inches. Matching gauge ensures your finished project is the correct size.