Crochet Hook Sizes and Yarn: How They’re Matched
How crochet hook sizes and yarn weights are matched, and why gauge matters more than the label.
Editor team
4mm Crochet Hook: Size, Letter, and What to Use It For
A 4mm crochet hook is a US G-6 and UK 8. See what yarn weight it fits and how it compares to nearby sizes.
5.5mm Crochet Hook: Size, Letter, and What to Use It For
A 5.5mm crochet hook is a US I-9 and UK 5. See what yarn weight it fits and how it compares to nearby sizes.
1.5mm Crochet Hook: Size, Letter, and What to Use It For
A 1.5mm crochet hook has no standard US letter. See what yarn weight it fits and how it compares to nearby sizes.
5mm Crochet Hook: Size, Letter, and What to Use It For
A 5mm crochet hook is a US H-8 and UK 6. See what yarn weight it fits and how it compares to nearby sizes.
1.75mm Crochet Hook: Size, Letter, and What to Use It For
A 1.75mm crochet hook has no standard US letter. See what yarn weight it fits and how it compares to nearby sizes.
11.5mm Crochet Hook: Size, Letter, and What to Use It For
A 11.5mm crochet hook has no standard US letter. See what yarn weight it fits and how it compares to nearby sizes.
What Size Is a G Crochet Hook in mm?
A G crochet hook is 4mm. See what yarn weight it fits and how it compares to nearby letters.
What Size Is a I Crochet Hook in mm?
A I crochet hook is 5.5mm. See what yarn weight it fits and how it compares to nearby letters.
What Size Is a F Crochet Hook in mm?
A F crochet hook is 3.75mm. See what yarn weight it fits and how it compares to nearby letters.