Crochet Hook Size Converter
Convert crochet hook sizes between US letter/number, metric millimeter, and UK sizing systems. Includes a complete reference chart for all standard hook sizes.
How to Use Crochet Hook Size Converter
Select the input sizing system (US, metric mm, or UK), enter the hook size, and click Convert. View equivalent sizes in all three systems plus a complete reference chart below.
Step-by-Step Instructions
- Select the input sizing system
- Enter the crochet hook size
- Click Convert to see all equivalents
- Reference the full size chart below
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