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Worsted Weight Yarn

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What Is Worsted Weight Yarn?:

The phrase "worsted weight yarn" refers to medium-weight yarn which is heavier than dk yarn / double knitting yarn, sport weight yarn, baby weight yarn, fingering weight yarn or crochet thread; it is lighter than chunky yarn or bulky yarn.

The packaging of worsted weight yarn is sometimes labeled with a yarn symbol featuring a prominent number 4 in the center, with the word "medium" appearing underneath. The symbol is part of a series of symbols which has been popularized by the Craft Yarn Council, and is used by yarn manufacturers who comply with the Craft Yarn Council's system of yarn weight standards. Not all manufacturers use their symbols, or the CYC's system.

The Craft Yarn Council's Standard Yarn Weight System:

Without a unified standard for yarn weights, it would be difficult for those who use, distribute and manufacture yarns to describe new or unfamiliar yarns to each other. Such a standard is helpful for crafters when they peruse yarn-related websites, publications, newsletters and other communications. With that in mind, the Craft Yarn Council has developed a standard yarn weight system; this system is in use by some yarn manufacturers, publishers, designers and crafters.

Examples of Worsted Weight Yarns:

Several popular worsted weight yarns are listed below:

Popularity of Worsted Weight Yarn:

Several large-scale yarn manufacturers and retailers proclaim that worsted weight yarn is their most popular weight for knitting and crocheting. This group includes Lion Brand Yarns and Bernat.

Coats and Clark claims that their worsted weight Red Heart Super Saver has been the USA's best selling yarn for more than a 70-year time span.

Who Uses Worsted Weight Yarn? What Is It Used For?:

Worsted weight yarn appeals to crochet enthusiasts, knitters, weavers, textile artists and crafters for use in a wide variety of projects. We use worsted weight yarn to create afghans, clothing, home decor items, accessories, toys and much more.

Recommended Hook Sizes for Crocheting With Worsted Weight Yarn:

There are no hard-and-fast rules about what hook size you have to use with any given yarn weight; hook size is a matter of preference. Everyone's crocheting varies to a certain degree, which means that your preferred hook size might (or might not) be a little different than another crocheter's. Also, the hook size you want to use might vary considerably, depending on the type of project you are trying to crochet.

  • If you desire a tight, stiff fabric perhaps a size G hook, or maybe even an F hook, would be appropriate, depending on what you have in mind -- for example, if you want to try crocheting amigurumi or other types of toys. When crocheting amigurumi, you don't want fluffs of stuffing coming through the fabric, and the item needs to hold its shape.


  • When crocheting potholders and similar projects, which need to be tight enough to provide insulation yet somewhat flexible, I generally like to use an H hook, which would usually be in the neighborhood of 5.0 mm, depending on hook manufacturer.


  • If you want to crochet a drapey, flexible fabric, a larger crochet hook is the way to go -- perhaps a hook in the I / J / K range would work to achieve your objective.


  • When I first learned to crochet, I always used a size G crochet hook with worsted weight yarn. Not surprisingly, my early crochet work was tight and stiff. I eventually became adept at crocheting more loosely with the size G hook, but for me, that was just not the ideal hook size to use under most circumstances. See also: lessons I learned from my favorite crochet hook.


  • When working Tunisian crochet with worsted weight yarn, I've been using a size J Tunisian crochet hook. That tends to create a seriously thick fabric. In many cases, a larger hook would be an improvement; large Tunisian crochet hooks are on my "wish list" for future purchase.


  • When crocheting with multiple colors using the tapestry crochet technique, I might -- or might not -- vary my hook size considerably, depending on the project and what I am trying to achieve with it.


  • When crocheting with worsted weight yarn, the Craft Yarn Council recommends using a hook in the 5.5 — 6.5 mm size range (I–9 to K–10 1⁄2.) Learn more here.

Free Crochet Patterns Featuring Worsted Weight Yarn:

Here at the About Crochet website, worsted weight yarn is a favorite! We've used it to create many of our free crochet patterns. Here are a few of our most popular patterns featuring worsted weight yarn:

Free Knitting Patterns Featuring Worsted Weight Yarn:

The following free knitting patterns are available from the About.com knitting website:

Wool Processing and Spinning: Worsted vs Woolen:

The word "worsted" does not always refer to a yarn weight. It can also refer, among other things, to a method of processing wool -- the worsted method, as opposed to the woolen method. The distinctions might be of interest to spinners, textile designers, textile engineers, yarn manufacturers and educators, but isn't strictly a necessary part of the average crocheter's knowledge base.

If you're interested in learning more about spinning yarn and / or wool processing, and specifically about the differences between worsted yarn vs woolen yarn, I refer you to the following articles:

See Also: Does ply have anything to do with yarn weight?

Additional References:

I consulted the following resources when writing this article:

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