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Standard Yarn Weight System

Categories of yarn, gauge ranges, and recommended needle and hook sizes

Yarn Weight Symbol
& Category Names
 lace super fine fine light medium bulky super bulky
Type of
Yarns in
Category
 Fingering
10-count
crochet
thread		 Sock,
Fingering,
Baby		 Sport,
Baby 		DK,
Light
Worsted 		Worsted,
Afghan,
Aran		 Chunky,
Craft,
Rug 		Bulky,
Roving
Knit Gauge
Range* in
Stockinette
Stitch to 4 inches
 33–40**
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
 1.5–2.25
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
 000–1 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
32–42
double
crochets**		 21–32
sts 		16–20
sts		 12–17
sts 		11–14
sts		 8–11
sts		 5–9
sts
Recommended
Hook in Metric
Size Range
 Steel***
1.6–1.4
mm		 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
 Steel***
6, 7, 8
Regular
hook B–1		 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.

** Lace weight yarns are usually knitted or crocheted on larger needles and hooks to create lacy, openwork patterns. Accordingly, a gauge range is difficult to determine. Always follow the gauge stated in your pattern.

*** Steel crochet hooks are sized differently from regular hooks—the higher the number, the smaller the hook, which is the reverse of regular hook sizing

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