Crochet Hook Conversions    

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Crochet Hook Conversion Chart

Please use this crochet hook conversion chart as a guide. Actual sizes may vary by crochet hook manufacturer.

Convert from Metric to US to UK and Canadian sizes for aluminum crochet hooks.

Crochet hook sizes are generally chosen to match the thread thickness. Thicker yarns need thicker hooks. The hooks may be made of metal, wood, plastic, or bone.

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ALUMINUM CROCHET HOOK CONVERSION
Metric (mm)
US
UK/Canada
2.0
-
14
2.25
B/1
13
2.5
-
12
2.75
C/2
-
3.0
-
11
3.25
D/3
10
3.5
E/4
9
3.75
F/5
-
4.0
G/6
8
4.5
-
7
5.0
H/8
6
5.5
I/9
5
6.0
J/10
4
6.5
K/10.5
3
7.0
-
2
8.0
L/11
0
9.0
M/13
00
10.0
N/15
000
16.0
P/16
-
16.0
Q
-
19
S
-

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