Handy hookie references!

Hello! If you’ve attended my workshops and lost the crochet reference guides I provided, please feel free to print a copy off this page.

US/UK Crochet Terms

US

UK

Single crochet (sc) Double crochet (dc)
Half double crochet (hdc) Half treble crochet (htr)
Double crochet (dc) Treble crochet (tr)
Treble crochet (tr) Double treble crochet (dtr)

Crochet Hook Sizes Conversion Chart

Metric (mm)

Japanese

UK

US

2 2/0 14 -
2.25 3/0 13 B/1
2.5 4/0 12 -
2.75 - - C/2
3 5/0 11 -
3.25 - 10 D/3
3.5 6/0 9 E/4
3.75 - - F/5
4 7/0 8 G/6
4.5 - 7 7
5 8/0 6 H/8
5.5 - 5 I/9
6 10/0 4 J/10
6.5 - 3 K/10 1/2
7 - 2 -
8 - 0 L/11
9 - 00 M/13
10 - 000 N/15


Standard Yarn Weight System

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

Ply

Thread / Zephyr – na

Cobweb – 1

Lace – 2

Light-fingering – 3

4 5 8 10 12 na

Crochet Gauge*
Ranges in
Single Crochet
to 4 inch

32–42
double
crochet sts**
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

Wraps Per Inch

Thread / Zephyr – finer than cobweb

Cobweb – 40 or more

Lace – 36 – 40

14 12 11 9 7 5-6
* 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

Sources: Craft Yarn Council

 
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