Yarn Weights Conversion Chart

The Good Yarn Knitting Yarn Weights Comparison Chart

Working out the correct yarn weight for your project can be confusing if you are using a pattern from a different country. Below I will attempt to explain some of the different terms and the comparisons with our yarn weights conversion chart.

Yarn weight is simply a way of categorising yarn based on its thickness or “weight”. This can affect the final outcome of a knitting or crochet project, making it to big, too small or incorrect tension. The thickness of a yarn is most often measured in terms of the number of wraps per inch (WPI) or in a standardised system, by using terms such as lace, fingering, sport, worsted, and bulky.

The Good Yarn Fiori DK IV Hand Dyed 8 Ply Australian Merino Wool

However, it’s important to note that the weight classification and naming conventions can vary between countries, regions, and manufacturers. In Australia, we often get knitting patterns from many different countries. Therefore, its important to be able to easily identify the descriptions.

Following is a general overview of how yarn weight categories are commonly defined in Australia, Europe, and America. And also, how they compare to each other.

Australian and New Zealand Yarn Weights

In Australia and New Zealand, yarn weights are categorized using the Ply system, which is based on the number of strands twisted together to create the yarn. The higher the ply number, the thicker the yarn. The most common ply weights are 2-ply, 3-ply, 4-ply, 5-ply, 8-ply, 10-ply, and 12-ply.

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    Fiori Australian DK IV Hand Dyed Merino Yarn
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    Fiori Grande Bulky Australian Merino Yarn
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  • The Good Yarn Fiori Sock Yarn hand dyed
    Sock Yarn – Australian Hand Dyed

European / UK Yarn Weights

In Europe, yarn weights are commonly classified using the Metric system, which measures the weight of the yarn in grams per meter (g/m) or the thickness in millimetres (mm). The most common metric weights are 2-ply, 3-ply, 4-ply, 5-ply, 6-ply, and 8-ply, although some brands may use different terms such as “fine,” “light,” “medium,” and “heavy.”

American Yarn Weights

In America, yarn weights are classified using the Craft Yarn Council’s Standard Yarn Weight System, which groups yarns into seven categories based on their thickness, from lace (the thinnest) to jumbo (the thickest). The seven categories are:

Lace: 0 (also called “thread” or “cobweb”). Fingering: 1 (also called “sock” or “baby”). Sport: 2 (also called “light”). Worsted: 4 (also called “medium”). Bulky: 5 (also called “chunky”). Super Bulky: 6 (also called “super chunky” or “roving”) And finally, Jumbo: 7 (also called “jumbo” or “craft”)

It’s worth noting that some manufacturers may use different terms or numbers to describe their yarn weights, and the best way to ensure you’re using the correct yarn for your project is to check the recommended gauge on the pattern and match it to the yarn label.

  • Ashford Double Knit 8 Ply Yarn
    Ashford Double Knit 8 Ply Yarn
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    Ashford Triple Knit 12Ply Yarn
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    Ashford 100% NZ Wool Double Knit Cone

What is Double Knit and Triple Knit Yarn

Along the way, you will also hear terms such as double knit and triple knit. Double knit yarn (DK) is not typically used as a category in Australia, but as it is widely used overseas, you will hear yarn sold in Australia using these terms. Generally double Knit refers to a yarn that is slightly thicker than 8-ply. Similarly, triple knit yarn (TK) is used to describe a yarn that is equivalent to 12-ply.

 In Europe, the term double knit (DK) is used to describe a medium-weight yarn that is slightly thicker than a sport weight yarn. Double knit (DK) is classified as a weight category 3 yarn, which is between sport and worsted weight. Triple knit (TK) is not a common term used in America.

To compare the American and Australian systems, a 2-ply yarn in Australia is similar in thickness to a lace weight yarn in America. A 8-ply yarn in Australia is similar to a worsted weight yarn in America.

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  • The Good Yarn Ashford Caterpillar Cottons 100% cotton variegated dyed yarn with a beautiful crimpy, spiral plied texture.
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Yarn Weights Comparison Chart

Australian Yarn WeightAmerican Yarn WeightsEurope / UK Yarn WeightsSuggested Needle Size for Yarn Weights
2 Ply#0 – Lace / Fingering1 ply1.5mm – 2.25mm
3 Ply#1 – Super Fine / Sock / Fingering2 Ply1.5mm – 2.25mm
4 Ply#2 – Light3 ply1.25mm to 3.5mm
5 Ply#2 – Sport4 ply3.5mm – 4.5m
8 Ply#3 – DK / Light WorstedDK4.5mm – 5.5mm
10 Ply#4 – WorstedAran5.5mm – 6.5mm
12 Ply#5 – Bulky or ChunkyChunky6.5mm – 9mm
14 Ply#6 – Super BulkySuper Chunky9mm+

Knitting Needle & Crochet Hook Size Chart

The Good Yarn corresponding yarn weights needle sizes table wool

Learn more about cotton weights here

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    Sock Yarn – Australian Hand Dyed
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    Ashford Triple Knit 12Ply Yarn
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    Ashford Merino 4Ply Yarn
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    Ashford 100% Merino 4 Ply (NON-Superwash) Cone
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    Ashford 100% NZ Wool Triple Knit 12 Ply Cone
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    Ashford 100% NZ Wool 4 ply (3 fold) Cone
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    Ashford 100% NZ Wool Double Knit Cone
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    Pattern – 8Ply Yarn – Double Moss Stitch Vest