Yarn Conversion Chart

Red Heart With Love YarnUse this yarn conversion chart only as a guide and I suggest you test with a gauge swatch/tension square for more accurate results.

This yarn conversion chart is also useful if you have a pattern that lists a yarn that has a different country measurement scale and you need to convert yarn from one country to another.

This chart will also help you become familiar with the different names used between countries for the same types of yarn.

Yarn Conversion Chart

US Yarn Description UK Yarn Description AUS/NZ Wool Description Recommended Hook Size Gauge Range to 4 inches (with a single crochet)
Category 1:Superfine

Types of Yarn:

Baby weight,

Fingering weight,

Sock weight

Baby,2-3 ply Baby,2-3 ply US: B/1 – E/4 

UK: 13 – 9 or 10

 

AUS/NZ and Metric:

2.25 – 3.5mm

21 – 32 sts
Category 2:Fine

 

Types of Yarn:

Baby weight,

Sport weight

Baby,3 ply Baby,3 ply US: E/4 – 7 

UK: 9 or 10 – 7

 

AUS/NZ and Metric:

3.5 – 4.5mm

16 – 20 sts
Category 3:Light

Sports weight

 

Types of Yarn:

Double Knitting(DK),

Light worsted

Baby,4 – 5 ply,

8 ply

Baby,4 – 5 ply

8 ply

US: 7 – I9 

UK: 7 – 5

 

AUS/NZ and Metric:

4.5 – 5.5mm

12 – 17 sts
Category 4:Medium

 

Types of Yarn:

Afghan,

Aran,

Worsted

Double Knitting weight(DK),10 ply Double Knitting weight (DK),10 ply US: I9 – K/10½ 

UK: 5 – 3

 

AUS/NZ and Metric:

5.5 – 6.5mm

11 – 14 sts
Category 5:Bulky

 

Types of Yarn:

Chunky ,

Craft,

Rug

Aran,Double Knitting weight(DK),

10 ply

Aran,10 ply US: K/10½ – M 

UK: 3 – 00

 

AUS/NZ and Metric:

6.5 – 9.0mm

8 – 11 sts
Category 6:Super Bulky

Types of Yarn:

Super Chunky,

Roving

Chunky,Triple Knitting weight (TK),

12 ply

12 ply US: M/N13 upwards 

UK: 00 and upwards

 

AUS/NZ and Metric:

9mm and upwards

5 – 9 sts

I hope this is helpful to you. If you can see that something should be added to this yarn conversion chart then leave your suggestions below, they will be reviewed and adjustments will be made if accurate.

Enjoy making your projects!

All the best,

Paula

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About Paula

I'm the Crochet Designer, Teacher & Video Producer of Crochet Hooks You.

I taught myself how to crochet when I was a young girl and quickly picked up how to crochet the granny square and got hooked. Read More.

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