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Crochet Hook Size Translation Chart

Metric	USA	UK
2 mm	0	14
2.25 mm	B-1	13
2.75 mm	C-2	12
3 mm	N/A	11
3.25 mm	D-3	10
3.50 mm	E-4	N/A
3.75 mm	F-5	9
4 mm	G-6	8
4.50 mm	N/A	7
5 mm	H-8	6
5.50 mm	I-9	5
6 mm	J-10	4
6.50 mm	K-10.5	3
7 mm	N/A	2
7.50 mm	N/A	1
8 mm	L-11	0
9 mm	N-13	00
10 mm	N-15	000
11.5mm	P-15
12.75 mm	N/A	N/A
15 mm	Q-19	N/A
16 mm	Q	N/A
19 mm	S-35	N/A
25 mm	N/A	N/A

To translate a crochet hook measurement just go to the column that the measurement is listed in and go to that number. The measurements listed in the same row are the translations. For instance, if you have a crochet hook that is labeled 4mm that means that the USA measure is G-6 and the UK measurement is 8. Contact us if you have any questions.