Stitch marker (crochet)

In crochet, a stitch marker is a mnemonic device used to distinguish important locations on a work in progress. Crochet patterns have a mathematical basis, so stitch markers serve as a visual reference that takes the place of continuous stitch counting and reduces a crocheter's error rate.

Common uses for stitch markers include noting the first stitch on a crochet round, marking increase or decrease points, or identifying key locations in a complex repetitive stitch pattern.^[1] Beginning crocheters may use stitch markers to identify a turning chain.^[2] Stitch markers can also designate attachment points for components of a multi-part project, such as a sleeve on a sweater.^[3]

Crochet often employs complex lacy patterns where stitch markers are helpful. Crochet also has less inherent stretch than knitting, so crocheted garments require greater contour adjustments at the pattern and construction level.