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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

Fingering

Sport,
Baby

DK, Light
Worsted

Worsted,
Afghan,
Aran

Craft, Rug

Bulky, Roving
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