What Crochet Hook do I use with this Yarn Weight.

This is a good chart from “Queen of DIY”.

While there are always exceptions, this chart will help you in choosing the proper hook size for the yarn.

Most crochet  patterns will give you the yarn weight and hook sizes and this is a guideline for their pattern.

Sometimes we need to make the pattern a little bigger or smaller and that can be done by changing your hook size.  Check out the guidelines below.

Crochet Yarn Weights & Hook Sizes

Yarn Weights:

Common Names
– Thread – Cobweb – Lace – Fingering	– Sock – Fingering – Baby	– Sport – Baby	– DK – Light Worsted	– Worsted – Afghan, Aran	– Chunky – Craft – Rug	– Bulky – Roving
Common Uses
– Lace Knitting	– Light Layettes – Socks	– Light Sweaters – Baby Items – Accessories	– Sweaters – Other Garments – Lightweight Scarves	– Sweaters – Blankets- Outdoor Wear	– Rugs – Jackets – Blankets	– Heavy Blankets – Rugs – Sweaters
Crochet Guage* 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 Crochet Hook Size
1.6–1.4 mm* 6, 7, 8, B–1* (* Steel)	2.25-3.5 mm B–1 to E–4	3.5-4.5 mm E–4 to 7	4.5-5.5 mm 7 to I–9	5.5-6.5 mm I–9 to K–10.5	6.5-9 mm K–10.5 to M–13	9 mm and up M–13 and up

Crochet Hook Sizes:

Metric (mm)	US	UK/Canada
1.00 mm	–	10 steel
1.25 mm	–	8 steel
1.50 mm	–	7 steel
1.75 mm	–	5 steel
2.0 mm	–	14
2.25 mm	B/1	13
2.5 mm	–	12
2.75 mm	C/2	–
3.0 mm	–	11
3.25 mm	D/3	10
3.5 mm	E/4	9
3.75 mm	F/5	–
4.0 mm	G/6	8
4.5 mm	7	7
5.0 mm	H/8	6
5.5 mm	I/9	5
6.0 mm	J/10	4
6.5 mm	K/10.5	3
7.0 mm	–	2
8.0 mm	L/11	0
9.0 mm	M/N-13	00
10.0 mm	N/P-15	000
15.0 mm	P/Q	–
16.0 mm	Q	–
19.0 mm	S	–

Thanks to Queen of DIY for this Article.