Yarn weights for crochet range from fine lace thread up through jumbo roving, and matching the right hook size to each weight makes a huge difference in your finished fabric. Keep this reference chart handy whenever you try a new yarn brand. This guide gives the standard weight categories.
The Weight Chart
| Weight category | Common hook size | Typical use |
|---|---|---|
| Lace | 1.5mm to 2.25mm | Doilies, fine lace |
| Sport | 3.5mm | Lightweight garments |
| Worsted | 5.0mm | Most beginner projects |
| Bulky | 6.5mm | Quick blankets, hats |
| Jumbo | 9mm and up | Chunky arm-knit style projects |
Frequently asked questions
What is the most common yarn weight for beginners?
Worsted weight, paired with a 5.0mm H hook, is the most common starting point since it is widely available and forgiving for practicing basic stitches.
Need the hook size chart too?
See exact millimeter conversions for every hook letter.
See the hook size chart
