What is the Best Size Crochet Hook for a Blanket?

Crochet is a great activity to relax and create beautiful and warm blankets for your family, friends, and all the people you appreciate. The most important thing when creating a crochet blanket is finding the right tools, and for this, it is necessary to look for the perfect size crochet hook to suit your project. If you’re about to start your blanket project, you may be asking yourself what is the best size crochet hook for a blanket?

Unlike other types of knitting techniques, the crochet technique uses just one type of needle which has a hook on the end to create your designs. This hook and its size can completely change the finish of your blanket. For this reason, I’ve written this article about how to select the correct size crochet hook to make a beautiful, warm, and perfect blanket.


How to know the size of the crochet hook?

The sizes of the crochet hooks are classified according to a letter system that goes from B to U. The letter B is the smallest and the letter U is the largest. Independently of the material of the hook needle, the size system is going to be the same.

The only thing that is going to change the size of the hook needle is the kind of yarn you decide to use. Because, when we use a very thin yarn, it is essential to use a hook that adapts better to this type of yarn. For example, it is impossible to make a blanket with a thin yarn using a Q crochet hook because the Q hook has a diameter of 16 mm, which is considered to big for a thin yarn.

What is the perfect size crochet hook to make a blanket?

The best blankets are made of bulky yarn to make them warmer. With this in mind, the crochet hook needs to be selected according to the size of the yarn you will be using. The crochet hook most appropriate to make blankets is the J crochet hook which is equal to 6 mm. The size of the J crochet hook makes it simple to create every knot and chain without any problems or damage to the yarn.

Size Chart Of Crochet Hook To Make A Blanket

What is the problem With Not using the right size crochet hook?

Choosing the right size crochet hook can seem as though it is not important and is often a critical step that is overlooked by beginners. However, if you were to use the incorrect hook for your crochet blanket, the finish will more than likely not be what you are after. The incorrect-sized crochet hook will result in loose knots and an irregular pattern.

Sometimes, we can be quick to blame ourselves if the final result of the endless hours of work we have put in, does not result in the vision we had in the beginning. However, it’s good to remember that it often has nothing to do with our skills, tools are a major factor. In the case of crochet blankets, if you have not selected the correct size crochet hook you can at least partly put the blame on the hook!

That’s not to say that smaller hooks don’t have their place, they are perfect if you are looking to add a bit more detail to your blanket. You can always use smaller crochet hooks with finer yarn and give your blanket a more finished and elegant look.

So to sum it up, if you are looking to make the perfect, warm crochet blanket, go for a large hook – we recommend a J-size crochet hook – and a nice thick yarn. Only use finer yarns and smaller hooks when adding more detail. By selecting the crochet hook and a good yarn in the first place, not only do you ensure you aren’t throwing money away, but you can also save yourself a lot of time and frustration.


I’m Jane and I’m the editor of janesknittingkits.com! I am a long-time craft and clothing design fan who has been writing about these interests for years.

I have spent many hours studying knitting, weaving, sewing, embroidery, and quilting as well as learning about various brands and models of sewing gear and machines. In addition to this research, my work involves publishing information related to these topics in ways that will be informative for both amateur crafters like me and more experienced sewers!