CROCHET HOOK CONVERSION Chart
Please use this crochet hook conversion chart as a guide for crochet hook sizes in US and Metric. Actual sizes may vary by crochet hook manufacturer. When ordering with us please use this chart for metric sizes unless otherwise instructed.
Metric (mm)	US
0.60	16
0.75	14
1.00	12
1.25	10
1.50	8
1.75	6
2.0	4 A-0
2.5	2-1 B-1
3.0	1-0 C-2
3.25	0 C-3
3.50	00 E-4
3.75	-
4.0	F-5
4.5	G6-7
5.0	H-8
5.5	I-9
6.0	J-10
7.0	K-10.5
8.0	L-11
9.0	M-13
10.0	N-15
12.0	O
15.0	P-16
20.0	S

** NOTE: UK/Canada Chart is not included here because we could not locate a consistent chart.  Everywhere we looked there was a different listing, so we are strictly listing what we know to be accurate based upon Addi Manufacturing.

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