Crochet hook size conversion chart

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Anyone else get confused with the different sets of numbers and letters used to categorize crochet hook sizes out there?! Whenever I am reading a pattern or looking to purchase a new crochet hook, unless it specifies the size in ‘mm’, I always have to pull up this conversion chart.

I imagine other crocheters have the same struggle, so I put this chart together in hopes that this will help other crocheters too.

Crochet hook size conversion chart

Crochet hook size conversion chart. Shows the metric (mm) number, the US letter, US number, and UK/Canada number. #crochet #crochettips #howtocrochet

This should help you avoid any confusion regarding which crochet hook size to use.

Yahoo! Now we don’t have to google and double check the hook size terminology every time we read a pattern.

One tip for you

Take a screenshot of the chart and mark it as a ‘favorite’ in your phone. That way, when you’re shopping for your next crochet projects – either in a store or online – you can pull this up right away. 

Also, be sure to pin to your Pinterest boards! This actually helps other crocheters too, because they are more likely to see the pin and save it for themselves. Our (not so) little crochet community is so awesome – there is so much out there for free and so much inspiration we can take from other crocheters!

New to crochet?

If you don’t know how to crochet, or maybe just want to brush up on the basics, we have another great resource for you. 

Hop over to the Ultimate Beginner’s Guide to Crochet. This breaks down the basics of what you need to learn, in what order, and link you directly to some great resources! And best of all, it’s free!

Looking for something you can print and go? You can purchase the inexpensive ad-free printable PDF of that Guide from my Etsy Shop.

Bonus

We also have a FREE yarn weight conversion chart. Another tool to make your crochet supply shopping trip easier!

This links the US number and US category, ply (used in AUS and UK), and other terms commonly used to ensure you aren’t left guessing what weight of yarn you’re about to purchase!

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Maybe 1 day, there will be one standard used everywhere, but until then, we have these guides to help us out 🙂

I really hope these resources help you, enjoy!!

Happy crocheting!

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Other useful crochet references

Learn how to Crochet - the ultimate beginner's guide to crochet #crochet #howtocrochet #crochetforbeginners
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1 Comment

  1. September 20, 2021 / 11:11 am

    Found your site by googling YouTube. It has proved invaluable, especially for the US v European (mm) Crochet Hook Sizes. Have taken a Screenshot AND have written the conversion in a notebook.

    Your explanations, too, as to how to do stitches with their US name are superb!

    I first crocheted (the British way) over 50 years ago, BEFORE the age of Computers and Smartphones, and it’s like learning all over again.

    Thank you for making it so easy to understand.

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