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Crochet Hook Sizes: This Complete Guide Is All You Need

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CROCHET HOOK SIZES: WHY THE FUZZ?


When it comes to crochet hooks sizes, there’s a lot of fuzz, confusion & terms out there. Consequently there’s often lots of questions buzzing & you might be unable to find the correct crochet hook size suggested for a crochet pattern.

So what’s the problem you might think?

Easy answer: Different crochet hooks sizes & terms in different parts of the world.

Hence a huge amount of google searches, frustration & questions. In addition there’s also crochet hook sizes that are not decided on measurements & makes hook sizes different from different brands. Oh-no!

 

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Crochet Hook Sizes: This Complete Guide Is All You Need

 

WHAT YOU’LL LEARN:


I’ve added everything there is to learn about crochet hook sizes to this post & also made an amazing cheat sheet for you to download.

I mean, there’s nothing better than having this complete cheat sheet at arms reach. Because there’s always a good time for crochet.

Next I’m also teaching you what crochet hook size standard to live by, as it’s the most consistent & measurable sizing that’s out there.

Finally I’m adding a list of my favorite crochet hooks, as you might want to try new hooks for your next project.

 

UNDERSTANDING CROCHET:


Before I start teaching you about crochet hook sizes, I’m going to show you my personal experience & why I find understanding different crochet terms important.

I’m a fan of being able to understand crochet no matter what part of the world you come from.

When I learned crochet for the first time I learned it from my grandmother & I learned it all with Norwegian terms. I did not have any crochet patterns back then, but just crocheted along with my grandmothers very small crochet hook & a even thinner thread.

At least that was how tiny it seemed for a newbie crocheter.

I didn’t love it at first; the really small crochet hook & the thin thread scared me away. It was many years later that my grandmother once again thought me the basic crochet stitches that I fell in love with it.

I went on and bought a bigger crochet hook & thick yarn, and found a Norwegian crochet pattern that I loved. It was mostly chains & single crochet stitches, & I figured out how to read the crochet patterns on my own.

 

LEARNING US CROCHET TERMS, THEN UK CROCHET TERMS:


I continued crocheting Norwegian crochet patterns a few more years, but then I wanted to explore some more.

I found that reading only Norwegian crochet patterns limited me & I bought my first crochet books from AmazonCrochet Hook Sizes: This Complete Guide Is All You Need. Once again I learned to read the crochet patterns & made myself familiar with US crochet terms, then also UK crochet terms.

This meant hours of Google searches, but I also was able to make some amazing & beautiful creations. But today

I’m saving you time by teaching you about crochet hook sizes right here.

 

CROCHET HOOK SIZE STANDARDS:


Consequently I went from knowing metric crochet hook sizes as it is those we use in Norway.

Next I new the US crochet hook sizes & also the UK crochet hook sizes. But what I realized also was that those very thin crochet needle sizes also had their own size. The steel crochet hook sizes.

I thought; HELP!

 

Consequently there’s actually 4 size standards that I made myself familiar with:

  • Metric crochet hooks
  • US crochet hooks
  • UK crochet hooks
  • Steel crochet hooks

 

METRIC CROCHET HOOK SIZES:


The metric crochet hooks has a sizing usually ranging from about 2 mm, or even as small as 0.75 mm or less. Those small sizes is often steel hooks & are used when crocheting with thread.

I’m most familiar with Pony Steel Crochet Hooks, but I’m also usually working with hooks that are bigger.

 

The biggest sizes has increased the last few years, as really thick yarn has become more popular.

Personally my biggest crochet hook is size 15 mm from Knitpro, but as an example Loopy Mango has hook sizes as big as 25 mm or 35 mm.

 

US CROCHET HOOK SIZES:


When it comes to US or American crochet hook sizes there are actually 3 size methods.

  • American Numbered Crochet Hook Sizes
  • American Letter Crochet Hook Sizes
  • US Steel Hook Sizes (see headline further down)

 

The sizing with letters & numbers are almost parallel. One equal hook can for the most part have both a numbered size & a letter size.

An example is B is equal to size 1, furthermore C is equal to size 2., and so on. Some have their own size, as size 7 is in the middle of G (equal to size 6) and H (equal to size 8).

The numbered sizes range for the most part from 1 up to 15. The lettered sizes usually range from B to size Y. The Y size is as a result of jumbo yarn weights, as I mentioned with the big Loopy Mango crochet hooks.

The hooks in these sizes is also often called aluminum crochet hooks, but now a days crochet hooks in these sizes are made of different materials. Some of my favorite crochet hooks in these sizes are actually made of wood.

Resource: Read more about my favorite crochet hooks & find other crochet essentials.

 

UK CROCHET HOOK SIZES:


The sizing in the UK is also often used in Canada. Or as you’d might say Canadian crochet hooks sizes. The sizes are given in numbers ranging from 14 as the smallest hooks & the biggest hooks are numbered 000.

The smallest size is equal to 2 mm crochet hooks, while the biggest 000 hook is equal to a 10 mm crochet hook.

As far as I know this UK sizing is quite old & I’ve seen them named “old UK crochet hook sizes”.

 

STEEL CROCHET HOOK SIZES:


The steel hook sizes usually have their own terms & cheat sheets. For me steel hooks are more the “old school” crochet hooks, those I learn to crochet with together with my grand mother.

Steel hook sizes are actually different in UK & US, and both are numbered.

  • US Steel Hook Sizes
  • UK Steel Hook Sizes

 

The US steel hook sizes range from 14, the smallest hooks, up to the size 00, the biggest hooks. Furthermore the UK steel hook sizes range from 7, as the smallest hooks & the biggest steel hook size is 0.

Usually these steel hooks are the same as the ones mentioned in metric crochet hook sizes with sizing from 0.75 mm and with 3.5 mm as the biggest size. As I mentioned at the top, I’m automatically thinking of Pony Crochet Hooks in relation to steel hooks.

 

STANDARDIZATION OF CROCHET HOOKS:


As I mentioned in the beginning there’s actually only the 1 type of crochet hook sizing that is based upon actual measurements.

That’s also why I’m totally going to suggest you start using these hooks. I mean, what if you make something with the hook size suggested, but it actually turn out wrong?

Your solution is crochet hooks with metric sizing. The metric sizing is, as mentioned, actually based on a measurement, as the name might suggest.

The size is given in millimeters (mm) & consequently every hook based on this measurements should be the same.

 

Related: Craft Yarn Council also suggest that you should use metric crochet hook sizes.

They actually work to make sure that any crochet hook has the metric sizing, & in the US the metric sizing come in addition to the other sizes.

 

THE CROCHET HOOK SIZES CHEAT SHEET:


As you’ve already might have understood there’s such a huge & confusing amount of crochet hooks sizes out there.

What makes me the most confused is that many of the sizes also are named with a number. As an example there’s actually 4 different crochet hooks with the size 4.

These are equal to size 1.65 mm, 2 mm, 3.5 mm & 6 mm, consequently totally confusing!

To make this easier for you I’ve made 3 cheat sheets for the crochet hook sizes.

  • Complete Crochet Hook Size Cheat Sheet
  • Steel Crochet Hook Size Cheat Sheet (Smaller hooks)
  • Crochet Hook Size Cheat Sheet (“Normal Sized –> Huge hooks)

 

All of them are available for download on the bottom of the page. Finally you can also see them further down on this page, remember to Pin them to find them when in need.

 

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CROCHET HOOKS TO TRY:


As I promised in the beginning I’m adding a few crochet hook sets or brands that I love & use. All of my crochet hooks are sized with metric measurements. Further some of them also have the US lettered sizes.

These hook brands I’ve also mentioned in the text above, as they are quite relevant as an example for this post.

  1. Knitpro Crochet Hooks  – Weaves (my 12 mm favorite hook is from this brand).
  2. KnitproCrochet Hooks  – Symphony Rose (wooden crochet quality crochet hooks).
  3. PonyCrochet Hooks  – Steel (my smaller crochet hooks – don’t use them as often as the others).

 

Those 3 crochet hooks are different, but I love each of them for different use. You can also find crochet hooks over on:

 

There you can find great brands & hooks.

 

CROCHET HOOK SIZES – THE TAKEAWAY:


Your takeaway from this should be these important aspects:

  1. The Complete Crochet Hook Size Cheat Sheet (+ 2 extra hook size cheat sheets)
  2. The fact that the metric (mm) hook sizes are measurable & best as a reference.
  3. Crochet hooks to try & use

 

Finally please comment below & ask questions, let me know your thoughts!

 

Download the FREE Crochet Cheat Sheets

Crochet Hook Sizes: This Complete Guide Is All You Need

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Sheets included:

- Crochet hook sizes
- Yarn weights
- Crochet hook for the yarn weight
- US vs UK Crochet Terms
- Crochet charts

 

 

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16 thoughts on “Crochet Hook Sizes: This Complete Guide Is All You Need”

  1. Hello, I bought knitting yarn from the market which is medium size yarn neither so thick nor thin. But it was not mentioned the size of the yarn and which crochet hook size has to be used. i have done many projects with threads so far with 0.85 hook which came out well. But when i tried crocheting booties with the same hook size with yarn it was not giving the desired shape i wanted. i just want to ask you which hook size i need to use and how to understand the hook size to be used with the yarn because i usually buy loose yarn where nothing is mentioned neither yarn size nor hook size to be used. Thanks

    Reply
  2. A couple of thoughts:
    If you like ‘antique’ (old – pre-1950s or so, I think) patterns, the only way to be certain-ish about hook sizes is to make a gauge swatch, to see if you’re using the ‘right’ hook size. This pre-dates any standardization *anywhere*, of either hook sizes or yarn weights. If the pattern gives no info on a gauge swatch, you’re stuck with trial-and-error. (There are some beautiful patterns that are well worth the effort, but can be very frustrating without having appropriate knowledge.)
    If, like me, you have partial skeins that have lost their labels and you don’t know what weight the yarn is, or you’ve bought unlabeled yarn in a charity shop, you can use the Wraps Per Inch (WPI) method, it’s about half-way down.
    And you need to remember that however tightly or loosely you crochet (or knit) may change the hook/yarn you use for a given project.

    Reply
  3. I was disappointed in your guide. You did not include Japanese (Asian) crochet hooks in your review. I find that Japanese (Tulip and Clover brands) are lighter weight so I can crochet longer.
    Please revise your guide to include Asian crochet hooks.

    Reply
      • Actually, Tulip and Clover brands are showing up in stores in the US more and more. I see a lot of Clover brand hooks, needles, stitch markers etc in Joann’s and Michael’s stores. I’m also seeing them online as well so if they are different than US and European ones, I would love to have them included in your charts.

        Reply
  4. Your post prompted me to go look over the assorted crochet hooks I have gathered over the years. And I found some surprises. While nearly all of them have both letter and number sizing, the smallest steel hooks (3) only have number sizing that doesn’t match with the numbers on the bigger hooks. (For the record, they were left to me by my great grandmother who gifted everyone with crocheted lace in assorted colors and designs. She even crocheted the lace insert on my Mom’s now lost wedding dress!) Two hooks (One fiberglass, one metal) have no size markings at all. In fact the fiberglass hook isn’t marked at all while the metal hook is marked ‘Oxmoor USA’ on one side and ’14 carat gold plated’ on the other–and it is gold colored. And three are marked in letters, numbers AND millimeters. Two are Boyde hooks and the third is Susan Bates. And earlier this year someone gave me an absolutely huge crochet hook that I plan on using with teeshirt yarn that has 20mm stamped into the bamboo. All in all, four of my hooks were made in Germany, eight are US made, five (including Grandma Himes’s three steel hooks) are from England, two were made in Japan (with British/American sizing) and the last four I don’t know. Two metal hooks just have letter/number sizing, I’ve already told you the lone fiberglass one has no markings, and I think the lone bamboo hook came from China since I’ve seen identical ones for sale on ebay. And I haven’t bought a one of them–just been given them over the last twenty years. I really wish I still had those two boxes of assorted crochet cotton though. I found Grandma Himes handwritten lace patterns and want to try them!

    Reply
    • Hi Tammy!

      So exciting to read about your hooks!
      The stories behind the hooks are also so exciting to learn.

      I also think you should get some crochet cotton at some point, so you can try the handwritten lace patterns!

      Janne

      Reply
  5. Hi – I thoroughly enjoyed this post. I am I. Australia and our hooks tend to be marked in mm which is so easy and self explanatory! However, my preferred hooks are Clover soft touch and I have purchased several American patterns that call for and 11.5mm hook whereas Clover make a 10mm and a 12mm. Half a millimeter is obviously a very small increment but as I tend to make chunky afghans it certainly demands doing a sample square first.

    Reply
  6. I was concerned about converting steel sized crochet hooks the larger ones with the smaller size aluminum ones that I cannot find. I believe your cheat sheet will help me with this thank you very much.

    Reply

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Sheets included: Hook sizes, Yarn weights, Crochet Hook for Yarn Weight, US vs UK Terms, Crochet Chart Symbols

We will also send you emails about our other blog posts, educational content, crochet patterns (free & paid), marketing & special offers. You are also agreeing to our Privacy Policy. Unsubscribe at any time.



Download the FREE Crochet Cheat Sheets

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Sheets included:

- Crochet hook sizes
- Yarn weights
- Crochet hook for the yarn weight
- US vs UK Crochet Terms
- Crochet charts

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GRAB THESE CROCHET CHEAT SHEETS

Sheets included: Hook sizes, Yarn weights, Crochet Hook for Yarn Weight, US vs UK Terms, Crochet Chart Symbols

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We will also send you emails about our other blog posts, educational content, crochet patterns (free & paid), marketing & special offers. You are also agreeing to our Privacy Policy. Unsubscribe at any time.