Crochet Hook Conversion
Japanese – Metric (US) – UK/Canada
2/0 – 2.0mm – 14
3/0 – 2.3mm
4/0 – 2.5mm – 12
5/0 – 3.0mm – 11
6/0 – 3.5mm (F)
7/0 – 4.0mm (G)
7.5/0 – 4.5mm – 7
8/0 – 5.0mm (H) – 6
9/0 – 5.5mm (I) – 5
10/0 – 6.0mm (J) – 4
I focused on the Japanese crochet hook sizes, and their metric, US, UK and Canadian equivalents.
More conversions between metric, US, UK and Canadian crochet hooks can be found here.
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