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Kate is a designer and content creator, specializing in crafts and textile-related topics. She runs the Crochetpedia website, where she shares her crochet patterns, teaches through video tutorials, and researches crochet techniques. The experience as a pattern designer and education in fashion helped her better understand the world of textiles and handicraft. Kate comes from the family of makers, knitting and sewing from the early age. She lives by the Polish seaside with her partner and a dog.

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To achieve true mastery in crochet art, you simply must learn about the tools you’re using.

Something as simple as a crochet hook size chart can be a great reference when looking for the right tool for your next project. In this article, you’ll learn all about crochet hooks for beginners in general, as well as about their types and sizes. We will also compare the most popular sizes and recommend the types of projects you can use them for.

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The Importance Of Using The Correct Crochet Hook Size

Let’s start with what might be obvious for some, but is definitely worth mentioning – why should I bother about hook sizes at all?

Well, the answer is simple – because hook size is one of the most significant factors impacting your crochet work. If your hook size is off, the project won’t look the way it should, or the crochet fabric won’t behave the way you want it to. Of course, hook sizes go hand in hand with yarn weights and should be chosen with a particular yarn in mind.

What will happen if I choose the wrong hook size?

Frankly, your gauge will be off, which means that your swatch will be too tight or too loose in relation to what the pattern recommends. Even if you’re not following a particular pattern, you should follow yarn manufacturers’ recommendation for the hooks size (or range) that you should use with this type of material.

Using too small crochet hook will result in a very tight and dense crochet fabric and a high chance that the stitches will be distorted. It may also be very hard to crochet because the hook will be too small to comfortably “catch and hold” the yarn. Your crochet garment will be smaller than intended.

Choosing a crochet hook that is too big for your yarn will produce very lacy fabric, in which the stitches are not dense enough and will most likely lose their shape. Even the simplest stitches will have holes in them and will stretch too much, so keep it in mind. You may also end up with the garment bigger than intended.

 four wooden crochet hooks in different sizes

Anatomy of a Crochet Hook

  • Point – this is the part you insert into the stitches.
  • Throat – the narrowing part that keeps the yarn when you guide it through the stitches.
  • Shaft – this element determines the hook size and the size of the yarn loops.
  • Grip – the middle part of the hook where your thumb rests; often a place where the size is indicated.
  • Handle – bottom part of the hook, which you hold in your hand while crocheting.

You may also find tunisian crochet hooks, but they are not covered in this article. You may also find tapered hooks or inline hooks, which have differently shaped point.

Types of Crochet Hooks – Materials & Types

We can divide crochet hooks into categories, depending on their type or material. Each one has its pros and cons, as well as works great for different types of projects.

Wooden Crochet Hooks

 wooden crochet hooks in the ball of thread

This type of hook is definitely one of the best looking and environmentally friendly, but it comes with its disadvantages, too. Untreated wooden hooks (without a layer of lacquer, for example), may have splinters that the yarn will snap to. This material doesn’t really allow for very small hook sizes to be manufactured, as it’s quite soft and delicate.

Aluminum Crochet Hooks

colorful corchet hooks

This type of hook is very affordable and quite long-lasting, which makes them a perfect choice for beginners. Standard sizing applies.

Plastic Crochet Hooks

 five plastic crochet hooks in different colors

Plastic hooks may not last very long, but they are lightweight and cheap. Good choice for beginners, especially if you like your tools to have fun colors.

Steel Crochet Hooks

steel hooks with wooden handles on yellow background

These hooks have their own sizing standard because they are widely used for working with crochet thread and lacy projects. Steel is very durable and strong, so it’s a perfect material to make very small crochet hooks. If you want to try miniature crochet or create a very intricate lacy doily, you’ll most probably need a steel hook to do that.

Ergonomic Crochet Hooks

closeup of old woman's hands crocheting

Ergonomic hooks are usually made with mixed materials because the handle is specially sculpted to fit the hand. Ergonomic handles might help with wrist pains and allow for very comfortable crocheting.

Crochet Hook Sizes

There are four sizing systems you may stumble upon, but not all of the sizes reflect one another.

  • US crochet hooks
  • Metric (European) crochet hooks
  • UK crochet hooks
  • Steel crochet hooks

Standard Crochet Hook Size Chart

Below you can see the chart outlining the sizes across standard crochet hooks. As you may suspect, the smaller the size of the hook, the smaller the weight of the yarn that goes with it. Take a look at these size conversion charts, so that you never have problems with sizes again.

EU Metric Size US Size UK Size
2 mm 14
2.25 mm B/1 13
2.5 mm
2.75 mm C/2 12
3 mm 11
3.25 mm D/3 10
3.5 mm E/4 9
3.75 mm F/5
4 mm G/6 8
4.5 mm 7 7
5 mm H/8 6
5.5 mm I/9 5
6 mm J/10 4
6.5 mm K/10.5 3
7 mm 2
8 mm L/11 0
9 mm M/13 00
10 mm N/15 000
12 mm P
15 mm
16 mm Q
20 mm S (19 mm)



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infographic: standard crochet hook size chart

Steel Crochet Hook Size Chart

As I mentioned before, we use steel crochet hooks for intricate lacework, so there’s a different system to rate their size.

EU Metric Size US Size
3.50 mm 00
3.25 mm 0
2.75 mm 1
2.70 mm 00
2.55 mm 0
2.35 mm 1
2.25 mm 2
2.20 mm 2
2.10 mm 3
2 mm 4
1.90 mm 5
1.80 mm 6
1.75 mm 4/0
1.70 mm 5
1.65 mm 7
EU Metric Size US Size
1.60 mm 6
1.50 mm 8/7/2
1.40 mm 9/8
1.30 mm 10
1.25 mm 9/4
1.15 mm 10
1.10 mm 11
1.05 mm 11
1 mm 12/6
0.95 mm 13
0.90 mm 14/8
0.85 mm 13
0.75 mm 14/10
0.60 mm 12


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 infographic: steel crochet hook size chart

How to Choose The Right Size of Crochet Hook

There are a few ways to determine what size of hook you need for your project, so let’s see what you can do.

  • Follow a crochet pattern and choose exactly the size of the hook and the type of yarn the designer recommended.
  • Check the yarn label to see what size of hook the manufacturer recommends.
  • Make a couple of gauge swatches using different hook sizes to determine which one looks and works the best for your project.

Remember that there may be differences between two hooks of the same size because the material and type of manufacture matter. It happens especially with very small differences, such as fractions of the millimeters, but it doesn’t really affect the work.

What Yarns Work With These Crochet Hooks?

We can create ranges to guide you on which crochet hooks fit which yarn weights, but in the end, the results may differ. For example, worsted-weight yarn requires a 4.5 – 5.5 mm hook, but lighter yarns need smaller hook sizes. Remember that the information below is for guidance only, and always check your gauge when starting a new crochet project.

  • Lace Weight Yarn – 1.4 – 2.2 mm
  • Super Fine Yarn – 2.25 – 3.5 mm
  • Fine Yarn – 3.5 – 4.5 mm
  • Light Yarn – 4.5 – 5.5 mm
  • Medium Yarn – 5.5 – 6.5 mm
  • Bulky Yarn – 6.5 – 9 mm
  • Super Bulky Yarn – 9 – 15 mm

crochet hooks laying on crochet squares


Choosing the best crochet hook size may be tricky, but the experience will help you. Once you try working with a range of them, you’ll know which size goes with what weight of yarn. You will also know what type of hook works best for you because they differ in materials, weight, and level of comfort in crocheting they provide. To check the size of the hook you have, use the hook gauge tool.

Remember that you can always find hook size recommendations on the yarn label, or in the crochet pattern you are following. Check which sizing standard was used for your tools, and remember to use our tables to translate any foreign markings.

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