The Ultimate Guide to Crochet Hook Sizes

crochet hook sizes

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When it comes to the art of crocheting, the crochet hook size matters, as it greatly influences the outcome of your project.

As a beginner crocheter, navigating through various crochet stitches and selecting the best crochet hook for your yarn weight can be overwhelming. This is where a crochet hook size chart comes in handy, guiding you to choose the right tool for your project.

Crochet hooks come in various sizes and materials, and choosing the right one for your project can make a huge difference in the final outcome. In this comprehensive guide, together we’ll explore the range of crochet hooks available, when to use each type, and how to choose the perfect hook for every project.

Additionally, you’ll find handy tables for crochet hook sizes, yarn weights, and the best hook-yarn combinations. Let’s dive in and help you to become a crochet hook pro!


Types of Crochet Hooks

Standard Crochet Hooks

First, we have our Standard Crochet Hooks. These are the most common crochet hooks you’ll find in stores and online. They come in a variety of different sizes, materials, and shapes. Standard hooks are perfect for most crochet projects, from basic scarves to intricate lacework.

Inline and tapered crochet hooks are two popular design variations in regular hooks, with inline hooks featuring a consistent shaft diameter and a more squared-off head, while tapered hooks have a gradually narrowing shaft and a rounder head for smoother stitching.

The choice between the two is mostly personal preference, as each crocheter might find one type more comfortable and efficient than the other.

Ergonomic Crochet Hooks

Next, we have Ergonomic hooks. These hooks have a specially designed handle that provides extra comfort and support for your hand. These hooks are especially ideal for those who crochet for long periods or suffer from arthritis or carpal tunnel syndrome.

Tunisian Crochet Hooks

Another hook type is Tunisian hooks. These hooks, also known as Afghan hooks, are longer than regular crochet hooks and sometimes have a stopper at the end. They’re used for Tunisian crochet, which has some similarities to knitting and often creates a denser, more textured fabric.

Double-Ended Crochet Hooks

Lastly, we have Double-Ended Crochet Hooks. These hooks have two working ends, allowing you to crochet from either side. They’re typically used for unique techniques like double-ended Tunisian crochet or cro-hooking.

crochet hook sizes

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crochet hook sizes

Materials of Crochet Hooks


Aluminum crochet hooks are lightweight, durable, and glide smoothly through yarn. They’re an excellent choice for beginners and experienced crocheters alike.


Bamboo hooks are lightweight, eco-friendly, and have a warm, natural feel. They’re ideal for those who prefer a more organic touch.


Plastic hooks are lightweight and affordable, making them great for beginners or those on a budget. However, they may not be as durable as other materials.


Wooden crochet hooks are warm to the touch, comfortable to hold, and provide a natural grip. They’re perfect for those who enjoy a more traditional feel.


Steel crochet hooks are small and fine, making them perfect for working with delicate threads and creating intricate lace patterns.

crochet hook sizes

Crochet Hook Sizes and Conversion Table

Understanding crochet hook sizes can be confusing, as different countries use different sizing systems. I won’t go into depth in this blog post but the history of crochet is actually quite fascinating!

Crochet hooks are often identified by their size using letters, numbers, or millimeters (mm), with the “mm crochet hook” referring to the metric measurement of the hook’s diameter. 

To help you navigate this, I’ve created a crochet hook size conversion chart that shows crochet hook sizes according to US, UK, JAP and metric measurements. The table compares crochet hook sizes across various countries and standards.

Please note that this table may not cover all possible sizes and types, but it should give you a good starting point.

crochet hook sizes


US SizeUK/Canadian SizeMetric Size (mm)Japanese Size

This table provides a comparison of crochet hook sizes across different countries and standards. It’s essential to keep in mind that some variations might exist between brands and manufacturers.

Always refer to the pattern or yarn label for the recommended hook size and adjust as needed based on your gauge and personal tension.

Yarn Weights and Their Categories

Yarn weight refers to the thickness of the yarn, and it’s essential to choose the right weight for your most projects. 

Although this post is about types and sizes of crochet hooks, it’s important to mention yarn along with hooks, as they’re both essential to craft crochet projects! Even scraps of yarn can be stitched into fun & easy crochet projects!

crochet hook sizes

Below is a table that shows different yarn weights, their categories, and the suggested hook sizes for each.


US Yarn WeightUK Yarn WeightAustralian Yarn Weight
ThreadCobweb1 Ply
Lace1 Ply2 Ply
Super Fine (Sock, Baby, Fingering)2-3 Ply3-4 Ply
Fine (Sport)4 Ply5 Ply
Light (DK, Light Worsted)DK (Double Knit)8 Ply
Medium (Worsted, Aran, Afghan)Aran10 Ply
Bulky (Chunky, Craft, Rug)Chunky12 Ply
Super Bulky (Super Chunky, Roving)Super Chunky14 Ply
Jumbo (Jumbo, Giant)Jumbo16+ Ply

This table provides a comparison of yarn weights across different countries and standards. It’s essential to keep in mind that some variations might exist between designers, brands and manufacturers.

Always refer to the pattern or yarn label for the recommended yarn weight and adjust as needed based on your gauge and personal tension.

Choosing the Right Hook for Your Yarn

Pairing the right crochet hook with the correct yarn weight is best practice for achieving the desired results when following a pattern. I’ve put together a table that shows the best hook-yarn combinations (according to traditional recommendations), to help you make the perfect choice.

crochet hook sizes


Yarn Weight (US) / Yarn Weight (UK)Recommended Crochet Hook Sizes (US)Recommended Crochet Hook Sizes (UK)Recommended Crochet Hook Sizes (Metric)
Thread / ThreadSteel hooks 6/0 – 00/3.5 mmSteel hooks 6 – 3.5 mmSteel hooks 0.75 – 3.5 mm
Lace / 1-ply or 2-plyB-1 to E-42.25 – 3.5 mm2.25 – 3.5 mm
Super Fine (Sock, Baby, Fingering) / 3-ply or 4-plyB-1 to E-42.25 – 3.5 mm2.25 – 3.5 mm
Fine (Sport) / 5-ply or Double Knitting (DK)E-4 to G-63.5 – 4.5 mm3.5 – 4.5 mm
Light (Worsted) / Aran or WorstedG-6 to I-94.5 – 5.5 mm4.5 – 5.5 mm
Medium (Worsted, Afghan, Aran) / Bulky or ChunkyI-9 to K-10.55.5 – 6.5 mm5.5 – 6.5 mm
Bulky (Chunky, Craft, Rug) / Super Chunky or Super BulkyK-10.5 to M-136.5 – 9 mm6.5 – 9 mm
Super Bulky (Roving) / Super Chunky or Super BulkyM-13 to Q9 – 15 mm9 – 15 mm

This table includes both the US and UK yarn weight names and the corresponding recommended crochet hook sizes in US, UK, and metric measurements.

So, above are the traditional combinations of yarn and hook size. But! You know, sometimes I find myself grabbing the “wrong” sized hook for my yarn, and it’s like a happy little accident.

Crochet Tension Matters

I’ve discovered that using a different sized hook can give my work a whole new look, whether it’s creating a looser tension or even altering the appearance of a specific stitch. It can be stumbling upon a hidden treasure while crocheting!

If you’re a person who crochets tightly, with a firm tension, you might discover that using a slightly larger hook size than recommended, can provide you with the swatch size stated in the pattern.

And of course the reverse is true, if you’re a crocheter producing looser stitches! So again, the table provided gives the traditionally recommended combinations, but You Do You!

I sometimes encourage fellow crocheters to play around with hook sizes and yarn weights to see what delightful surprises they can uncover. Experimenting with these combinations can lead to unique textures and designs that you might never have thought of otherwise.

So, don’t be afraid to think outside the box and have a little fun – you never know what crochet magic you might create!

Start crocheting now, with my Home Decor free crochet patterns

Tips for Choosing the Right Crochet Hook

Check Your Pattern

Always refer to the crochet pattern you’re working on, as it will usually specify the hook size and yarn weight you should use.

Consider Your Tension

If you crochet tightly, you may need to use a larger hook to achieve the correct gauge. Conversely, if you crochet loosely, a smaller hook might be necessary. Adjust your hook size accordingly to match the recommended gauge in your pattern.

Experiment with Materials

Try out crochet hooks made from different materials to see which one feels the most comfortable in your hand and works best with your chosen yarn.

Consider the Project

Certain projects may benefit from specific hook types or materials. For example, if you’re working on a delicate lace project, a steel hook might be the best choice. On the other hand, ergonomic hooks are ideal for large projects or those that require a lot of repetitive motions.

crochet hook sizes

Caring for Your Crochet Hooks


Keep your crochet hooks clean by wiping them down with a (damp not wet!) cloth after each use. This will remove any dirt, debris and oils from your hands or yarn. Avoid using harsh chemicals or abrasive materials, as they can micro-damage the hook’s surface.


Store your crochet hooks in a case or container to protect them from dust, moisture, and damage. This will also help you stay organized and easily locate the hook you need for your next project.

Inspecting Hooks

Regularly inspect your crochet hooks for signs of wear, such as nicks, burrs, or bent tips. Metal hooks can also rust. Damaged hooks can catch and fray/pull on your yarn or affect your tension, so replace them as needed.

crochet hook sizes

FAQs About Crochet Hooks

How do I choose the right crochet hook for a project?

To choose the right crochet hook for a project, first, look at the yarn label or pattern instructions for the recommended hook size. Use this as a starting point and adjust the hook size based on your personal tension and the desired fabric texture.

Can I use different hooks for the same project?

Yes, you can use different hooks for the same project, especially when working with different yarn weights or when creating various textures within the same piece. Just make sure to maintain consistent tension, stitch count and stitch size throughout the project.

How can I improve my grip on a crochet hook?

To improve your grip on a crochet hook, consider using ergonomic hooks or adding a soft grip to your existing hooks. This can provide extra cushioning and support, making it more comfortable to hold and work with for extended periods.

Helpful tips for a crochet beginner to know about yarn

Yarn weight plays a crucial role in determining the final look and feel of your piece. Thicker yarns are perfect for creating warm and cozy projects, like blankets and winter accessories, while thin yarns are ideal for delicate and intricate designs, such as doilies and lacework.

What is the best yarn for a beginner crocheter?

As a beginner crocheter, it’s a good idea to start with an acrylic medium worsted weight yarn. This yarn is easy to work with and allows you to see your stitches clearly, making it perfect for learning the basics. It is also affordable, widely available, and comes in a variety of colors.

How do I choose the right yarn for my crochet project?

To choose the right yarn for your crochet project, consider the desired outcome and purpose. For a wearable item, consider the softness, warmth, and durability of the yarn. For home décor items, consider the texture and washability of the yarn. Always check the recommended yarn in the pattern you’re following.

How can I determine the amount of yarn needed for my crochet project?

To determine the amount of yarn needed for your crochet project, refer to the pattern you’re following. If you’re not using a pattern, make a small swatch with your yarn and hook, measure the dimensions, and calculate the approximate yardage based on the size of your intended project.

crochet hook sizes

The Importance of Gauge in Crochet Projects

What is gauge?

Gauge refers to the number of stitches and rows per inch in a crochet or knit fabric. It is essential to maintain consistent gauge throughout a project to ensure the correct sizing and fit.

Why is gauge important?

Gauge is important because it determines the size of your finished project. If your gauge is off, your project may end up too large or too small. It’s essential to check your gauge before starting a project, particularly for garments, to ensure a proper fit.

How do I check my gauge?

To check your gauge, crochet a swatch using the recommended hook size and yarn weight. Measure the number of stitches and rows in a 4-inch square area and compare to the gauge information in the pattern. If your gauge doesn’t match, adjust your hook size and make another swatch until you achieve the correct gauge.

crochet hook sizes

Mastering the art of crochet requires understanding the different types of crochet hooks, their sizes, and which hooks work best with various yarn weights.

The key to successful crochet projects is selecting the right size hook for the task at hand and maintaining consistent gauge and tension throughout your work.

Use the tables provided in this blog post as a reference to help you choose the right hook for your projects and ensure the best results. Remember that practice makes perfect, so don’t be afraid to experiment with different hook sizes, materials, and yarn types to find what works best for you.

Understanding the range of crochet hooks and their uses is essential for any crocheter. By choosing the right hook for your project, considering the yarn weight and type, and following these helpful tables, you’ll be well on your way to creating beautiful and successful crochet projects. And don’t forget to care for your hooks properly to ensure they last a lifetime.

crochet hook sizes

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