Curated Guide Collection
Crochet Hook Sizing & Materials Guide
Everything about hook millimeter diameters, US letters, vintage UK numbers, inline vs tapered hooks, and ergonomic grips.
Crochet Hooks7 min read
Crochet Hook Sizes Chart: mm, US Letters and UK Sizes Explained
Why millimeters are the only size you can trust, a full conversion chart, steel hooks, which hook suits which yarn, and how hook shape and material change the way you crochet.
Read Full Guide
Crochet Basics5 min read
US vs UK Crochet Terms: Conversion Chart and How to Tell Them Apart
A UK double crochet is a US single crochet. Here's the full conversion chart, why the systems differ, how to spot which one a pattern uses, and how to convert without mistakes.
Read Full Guide
Related Crochet Calculators & Converters
Gauge & Stitch
Crochet Gauge Calculator
Calculate stitch density and precise rows and stitches needed for your target project dimensions.
Open Calculator
Gauge & Stitch
Crochet Hook Size Converter
Convert between US letter/number sizes, UK vintage numbers, and precise metric millimeter hook sizes.
Open Calculator