YARN today Crochet Pages

Conversion Charts

Crochet Hook Sizes

Metric
Old UK
US
10.00mm000
9.00mm00
8.00mm0
7.00mm2K - 10 1/2
6.50mm310 1/4
6.00mm4J - 10
5.50mm5I - 9
5.00mm6H - 8
4.50mm77
4.00mm8G - 6
3.75mm9F - 5
3.50mm9E - 4
3.25mm10D - 3
3.00mm11
2.75mm12C - 2
2.50mm
2.25mm13B - 1
2.00mm14B - 1
1.75mm155 steel
1.50mm167 steel
1.25mm178 steel
1.00mm1810 steel

Crochet Stitches

In these days of the internet it is possible to obtain patterns from around the world. They may be written in English but the specific terms used for stitches, etc differ. Even more confusingly the same term is used to describe different stitches. For example, what we in the UK call double crochet is referred to as single crochet in the US.

If you are not sure where a pattern originated then just check out the term double crochet (dc) in the section that describes the abbreviations used.

UK
US
slip stitch (sl st)slip stitch (sl st)
double crochet (dc)single crochet (sc)
half treble (htr)half double crochet (hdc)
treble (tr)double crochet (dc)
double treble (dtr)treble (tr)
triple treble (trtr)double treble (dtr)
missskip
tensiongauge
yarn over hook (yoh)yarn over (yo)

Yarn Thickness

Always test your tension before embarking upon a project.  The following conversions are approximate. As you will see US Sport can be either 4 ply or double knitting. This chart can only ever be a rough guide to help you make your choices.

UK
US
Australia
NZ
Approx
Needle Size
Approx
Tension
2 plyLight fingering /
Lace weight
2 ply1.75mm
3 plySock /
Fingering
3 ply2.75mm32-26sts to 10cm (4in)
4 plyFingering /
Sport
4 ply3.25mm
Double
Knitting
Sport /
Worsted
8 ply4.00mm22-24sts to 10cm
AranFisherman /
Medium
12 ply5.00mm20sts to 10cm
ChunkyBulky14 ply6.00mm14sts to 10cm