Hook and yarn conversions

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Hook and Yarn Conversions

Thread (Steel) Hooks

Metric (mm)	UK / Canadian	US	Japanese	Suggest UK Thread/Yarn	Suggested US Thread/Yarn	Suggested Australian Thread/Yarn
0.50			22	no.70 thread
0.55			21	no.70 thread
0.60	6	14	20	no.70 thread
0.70		13	18
0.75	5	12	17	no.30-60 thread
0.80		11	16
0.90			14
1.00	4	10		no.20-30 thread
1.10			10
1.15		9
1.25	3	8		no.10-20 thread
1.50	2½	7	2	no.10-20 thread
1.60		6
1.70		5
1.75	2	4		no.5 thread
1.85		3
1.90			1
1.95		2
2.00	1	1		no.3 thread / 3-ply
2.25	00	0
2.50				3-ply
2.75
3.00		00		4-ply

Yarn Hooks

Metric (mm)	Old UK Yarn Size	US Yarn Size	Japanese	Suggest UK Thread/Yarn	Suggested US Thread/Yarn	Suggested Australian Thread/Yarn
2.00	14		2/0	no.3 thread / 3-ply
2.25	13	B/1	3/0
2.50	12		4/0	3-ply
2.75		C/2
3.00	11		5/0	4-ply
3.25	10	D/3
3.50	9	E/4	6/0	4-ply / double knit
3.75		F/5
4.00	8	G/6	7/0	Double knit	Light Worsted	8 ply
4.25
4.50	7	7		Double knit / Aran	Light Worsted / Worsted	8 ply/10 ply
5.00	6	H/8	8/0	Aran	Worsted
5.50	5	I/9		Aran	Worsted
6.00	4	J/10	10/0	Aran / Chunky
6.50	3	K/10½
7.00	2			Chunky	Bulky	16 ply
8.00	0	L/11
9.00	00	M/13
10.00	000	N/15
11.00
12.00		O/16
13.00
14.00
15.00		P/16
16.00		Q
17.00
18.00
19.00		S/35
20.00