There are multiple yarn weights and here is a table explaining what each weight is for and what crochet hook is best to use for that yarn.

Standard Yarn Weight System

* These are guidelines only.  They reflect the most commonly used gauges and needle or hook sizes for specific yarn categories.

** Lace weight yarns are usually knitted or crocheted on larger needles and hooks to create lacy, openwork patterns.  Accordingly, a gauge range is difficult to determine.  Always follow the gauge stated in your pattern.

*** Steel crochet hooks are sized differently from regular hooks -- the higher the number, the smaller the hook, which is the reverse of regular hook sizing.


I hope that this helps you in determining your yarn choice.  REMEMBER: look on the yarn label for the information that you need to pick your correct yarn.

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