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What size is my crochet hook?

Welcome to another Tip Tuesday! Today, I’m going to tell you how to figure out what size your crochet hook is.

Now, if your crochet hook has the size written on it (either a letter or a number), then you can stop reading this blog post and continue crocheting. However, if you have an older hook, a handmade hook or perhaps a hook from a lesser-known company (that may not always write the size on the hook), then you’re going to need a way to know what size it is!


Meet Mr. Gauge… he’s your friend! Many people think that needle gauges are just for knitters (including, apparently, Susan Bates- the maker of this gauge- since it’s called ‘knit-check’), but it’s not true! A gauge will tell you what size your hook is!


First, look at your crochet hook. The part you want to measure is what’s called the ‘shaft’, and it’s the part below the hook that’s a plain cylinder. Don’t measure the very skinny part right below the hook (this is called the throat), because then you won’t get an accurate size.


Now that you know what part of the hook to measure, stick it in each hole of the gauge! If your hook doesn’t fit into the hole, then that’s not the right one. You’re looking for the hole that is exactly the same size as the shaft of your hook… check out the picture above- see how my hook is an H? There’s no extra wiggle room!


It’s pretty easy to tell that my hook isn’t a size L… look at all that extra room! No good!

So, there you have it! If you’ve got any mysterious hooks, grab a gauge and you’ll know what size they are!

9 Responses to “What size is my crochet hook?”

  1. Cheryl says:

    Great tip! I would never have thought of using my knitting needle gauge for crochet needles, but now that you’ve said it, it’s such an obvious cross-over!

  2. Susan says:

    I have a “mystery” hook, but not a gauge. (I don’t knit) Is there a gauge I can print out?

    I’ve been attempting to measure it with a tape measure, but I’m REALLY confused by THAT! LOL

    ANY help is appreciated! :)
    The “Detroit” Happy Hooker”:)

    • Stacey says:

      Gauges aren’t just for knitters!
      They aren’t terribly expensive, and it’ll probably come in useful for your crocheting life, so I recommend buying one.
      There may be a print-out one, but since you’d need to cut the hole out by hand, I can’t imagine it’s terribly accurate.

    • Samantha says:

      Susan, as Stacey said guages are so useful and don’t cost too much. However you could always take the hook in question to wherever you buy your yarn and ask them to borrow a gauge, I’m sure your local yarn shop owner would help.

      • Stacey says:

        Yes, that’s a good idea!
        But if it’s 6pm and you’re itching to start a project, you might not want to wait until the next morning when your yarn shop opens :)

        • Pat says:

          I’ve been crocheting for over 40yrs and I never knew this! Thanks so much for the great tip!!!

  3. I enjoy your website & the comment sections are very helpful.
    I do have a question. I have numerous crochet hooks that are to too large for the gauge with holes & they have no numbers or letters. Any suggestions on how to measure them.
    Debbie @ d.odonnell@yahoo.com
    Thanks so much

    • Stacey says:

      Hi Debbie!
      Yes, that’s a very good question. If the head is too large, then it won’t fit in the gauge. My suggestion would be to measure the circumference of the shaft in mm, and then calculate the diameter (circumference/3.14) to get the diameter.