Yarn weight conversion chart

U.S. Yarn Weight
Symbol &
Category
Names

   
Type of
Yarns in
Category (U.S.)		 Lace
-
Sock,
Fingering,
Baby
Sport,
Baby
DK,
Light
Worsted
Worsted,
Afghan,
Aran
Chunky,
Craft,
Rug
Bulky,
Roving
Type of
Yarns in
Category (Japanese)		  
Type of
Yarns in
Category (U.K.)
2-ply
3-ply
4-ply
Sport
Double Knitting
-
Bulky
-
Approx. length /50g
430m
270m
190m
140m
100m
70m
60m
Yarn Label in category Aunt Lydia Crochet Cotton size 10   Adriafil Advantgarde,
Adriafil Uno Ritorto 5,
Louet Euroflax 		Louet Euroflax,
ggh Bali 		Adriafil Floris, Adriafil Memphis, ggh Linova, JoSharp DK cotton Adriafil Nature, ggh Polo, Lion Cotton, Lion Organic Cotton, Lily Sugar 'n Cream, Louet Euroflax Adriafil Sugar, Lion Landscape, Lion Jiffy, Lion Suede Lion Wool-ease Thick n Quick, Lion Velvet Spun
Knit Gauge
Range* in
Stockinette
Stitch to 4 inches
36–40
sts
32–36
sts
27–32
sts
23–26
sts
21–24
st
16–20
sts
12–15
sts
6–11
sts
Recommended
Needle in Metric
Size Range
1.25—
1.75
mm
1.75—
2.25
mm
2.25—
3.25
mm
3.25—
3.75
mm
3.75—
4.5
mm
4.5—
5.5
mm
5.5—
8
mm
8 mm
and
larger
Recommended
Needle U.S.
Size Range		    
1 to 3
3 to 5
5 to 7
7 to 9
9 to 11
11
and
larger
Crochet Gauge*
Ranges in
Single Crochet
to 4 inch
   
21–32
sts
16–20
sts
12–17
sts
11–14
sts
8–11
sts
5–9
sts
Recommended
Hook in Metric
Size Range 		   
2.25—
3.5
mm
3.5—
4.5
mm
4.5—
5.5
mm
5.5—
6.5
mm
6.5—
9
mm
9
mm and
larger
Recommended
Hook U.S.
Size Range 		   
B–1
to
E–4
E–4
to
7
7
to
I–9
I–9
to
K–10 1⁄2
K–10 1⁄2 to
M–13
M–13
and
larger
* GUIDELINES ONLY: The above reflect the most commonly used gauges and needle or hook sizes for specific yarn categories.
compiled by Leaping Yarns