Crochet hook sizes can vary from country to country. So you can select the right size for the job at hand.
Hook sizes range from 0.60mm right up to 25.0mm. And just to make it even more complicated there are three main measurement schemes for hook sizes. The size that is recommended by your crochet pattern will depend on where the pattern was printed.
If you are in Australia most crochet hooks are marked with both the metric size and the UK/Canadian sizes. But if you are buying crochet hooks manufactured in the United States the manufacturer will have used the US sizes.
A size 2 in one country is not necessarily the same size as a size 2 in another country! I tend to use metric sizes as no matter where you are 2.0mm is still 2.0mm.
Getting the hook size right is important. The size of your hook, along with the weight of the thread will determine the overall size of your project.
As with knitting needles, the finer the hook you use, the smaller the end product will be.
Table of Crochet Hook Sizes
As a general guide for selecting your crochet hook size if your yarn is:
- Fine Crochet Cotton – use 0.60mm to 1.75mm hooks
- Two or Three Ply – use a hook 2.00mm or smaller
- Four Ply Wool – use 2.75mm or 3.25mm hooks
- Double Knit or Eight Ply Wool – use 3.25mm or 4.0mm hooks
- Triple Knit or Twelve Ply Wool – use 5.0mm or 6.0mm hooks
