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Crochet Hook Sizes

Metric Sizes (mm) US Sizes UK/Canadian Sizes
1.5 mm 8 2.5
2.00 mm - 14
2.25 mm B/1 13
2.50 mm - 12
2.75 mm C/2 -
3.00 mm - 11
3.25 mm D/3 10
3.50 mm E/4 9
3.75 mm F/5 -
4.00 mm G/6 8
4.50 mm 7 7
5.00 mm H/8 6
5.50 mm I/9 5
6.00 mm J/10 4
6.50 mm K/10 ½ 3
7.00 mm - 2
8.00 mm L/11 0
9.00 mm M/13 00
10.0 mm N/15 000
12.0 mm P/16 -
15.0 mm P/Q -
16.0 mm Q -
19.0 mm S -
20.0 mm S -
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