Hooks

Crochet hook Conversion chart
European metric	UK size	US size
2 mm	14	B/1
2.25 mm	13	-
2.5 mm	12	C/2
3 mm	11	-
3.25 mm	10	D/3
3.5 mm	9	E/4
4 mm	8	G/6
4.5 mm	7	7
5 mm	6	H/8
5.5 mm	5	I/9
6 mm	4	J/10
6.5 mm	3	K/10½
7 mm	2	-
8 mm	0	L/11
9 mm	00	M/13
10 mm	000	N/15
12 mm	-	O/16
15 mm	-	P/19
16 mm	-	Q
17 1/2 mm	-	R
19 mm	-	S/35