Crochet hook sizes and yarn are matched by weight category, from lace weight on a small steel hook up to super bulky on a jumbo hook. These pairings are a useful mental map, but confirm with a swatch before starting anything that needs to fit.
The general pairing pattern
- Lace to fingering: 2.0mm to 2.75mm.
- Sport to DK: 3.25mm to 4.0mm.
- Worsted: 5.0mm to 5.5mm.
- Bulky to super bulky: 6.5mm to 9mm.
Why gauge overrides the general pattern
If your tension runs tighter than average, you may need a hook one size larger than these general pairings suggest to hit a pattern’s stated gauge. Treat this list as a starting point, then swatch to confirm.
Frequently asked questions
Do I have to match the exact hook size a pattern lists?
Only if the finished size matters. For a scarf or blanket where exact dimensions are flexible, your own comfortable tension matters more than matching the pattern’s hook exactly.
What yarn weight is easiest for beginners?
Worsted weight with a 5.0mm hook is the most common starting combination, since the yarn is thick enough to see your stitches clearly.
See the full mm to yarn weight breakdown
Get the complete pairing chart from lace to super bulky.