Master List of Crochet Hook Sizes

Master List of Crochet Hook Sizes

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Crochet Hook Size Conversions

Crochet Hook Size Conversions

Master List of Crochet Hook Sizes

Crochet hook sizes matter. New crocheters may not even clue in there is a difference until they are staring at a yarn aisle and seeing all the different sizes.

Hook sizes I recommend when making a purchase for the first time. Look for 5 mm, 5.5 mm, 6 mm or 6.5 mm. For our USA friends, that size H, I, J and K.

If you are ever unsure, look at the ball band and it gives a recommendation for the hook size needed.

Sizes indicated in the following order. Metric, USA, UK

  • 2 mm,  n/a, 14
  • 2.25 mm, B/1, 13
  • 2.50 mm, n/a, 12
  • 2.75 mm, C, 11
  • 3.00 mm, n/a, 11
  • 3.25 mm, D, 10
  • 3.50 mm, E/4, 9
  • 3.75 mm, F, n/a
  • 4.00 mm, 6, 8
  • 4.25 mm, G, n/a
  • 4.50 mm, 7, 7
  • 5.00 mm, H/8, 6
  • 5.50 mm, I/9, 5
  • 6.00 mm, J/10, 4
  • 6.50 mm, K/10.5, 3
  • 7.00 mm, n/a, 2
  • 8.00 mm, L, 0
  • 9.00 mm, M/N/15, 00
  • 10.00 mm, P, 000
  • 16.00 mm, Q, n/a
  • 19.00 mm, S, n/a
  • 25.00 mm, U, n/a
  • 30.00 mm, Z, n/a

For beginners, I would recommend the hook sizes in red for learning.

Mikey, aka Michael Sellick, of The Crochet Crowd, started this online journey back in 2008. A mere hobby in trying to reach out to others as he was mentally struggling with his own issues. His goal was simple, find others in the yarn communities, like him, that have a common interest.

The journey and main baby of the whole idea started with a YouTube Channel and then in 2011, an official website was developed. Michael is not only the face of The Crochet Crowd but also the working engine behind the crowd in self-taught programming, social media and so much more.

Enjoy the stitching journey. Life is short, enjoy this wonderful hobby and all of the learning opportunities that come with it.

5 thoughts on “Master List of Crochet Hook Sizes”

  1. Karen says:

    Hi, thank you for sharing your knowledge!! Have you done a percentage analysis yet? Like if using a size 4 yarn and changing hook size minimum to maximum, to see how the size changes. So a 4mm hook gets 2″ X2″ but a 5mm hook gets 2.25 x2.25″ or whatever. I guess stitch used changes size too, so there’s that.

  2. Val says:

    My Clover Amour hooks have a G on them for the 4mm size. Also the UK has been on metric sizing since they joined the EU.

  3. Christine says:

    What about size M? I have a pattern calling for size M or 13mm

    1. Victoria Nitzsche says:

      Size M is 9.0 needle and size 13 is 0.85 needle

  4. Jean M says:

    I have some sizes that aren’t listed. 5.25, 5.75 just to mention a couple as well as some steel hooks that aren’t on any list I’ve seen.

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