Hook Conversion Chart

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Hook Conversion Chart

Type in a number to see any hook containing that number in the mm column with its equivalent

Metric	US	UK/Canada
2.25 mm	B-1	13
2.50 mm	-	12
2.75 mm	C-2	-
3.125 mm	D	-
3.25 mm	D-3	10
3.50 mm	E-4	9
3.75 mm	F-5	-
4.00 mm	G-6	8
4.25 mm	G	-
4.50 mm	7	7
5.00 mm	H-8	6
5.25 mm	I	-
5.50 mm	I-9	5
5.75 mm	J	-
6.00 mm	J-10	4
6.50 mm	K-10 ½	3
7.00 mm	-	2
8.00 mm	L-11	-
9.00 mm	M/N-13	-
10.00 mm	N/P-15	-
11.50 mm	P-16	-
12.00 mm	-	-
15.00 mm	P/Q	-
15.75 mm	Q	-
16.00 mm	Q	-
19.00 mm	S	-
25.00 mm	T/U/X	-
30.00 mm	T/X	-