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STANDARDS & GUIDELINES FOR CROCHET
AND KNITTING
Standard Yarn Weight System
Categories of yarn, gauge ranges,
and recommended needle and hook sizes
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Yarn Weight Symbol
& Category Names
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Type of
Yarns in
Category
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Fingering
10-count
crochet
thread |
Sock,
Fingering,
Baby |
Sport,
Baby |
DK,
Light
Worsted |
Worsted,
Afghan,
Aran |
Chunky,
Craft,
Rug |
Bulky,
Roving |
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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 |
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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 |
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Recommended
Needle U.S.
Size Range
|
000–1
|
1 to 3
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3 to 5 |
5 to 7 |
7 to 9 |
9 to 11 |
11
and
larger |
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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 |
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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 |
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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 |
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* 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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