How to Label and Store Crochet Hooks by Metric Size

Metric size is the clearest common reference when hook letters or numbers vary. A visible system prevents repeated measuring and accidental substitutions.

Record the millimetre diameter

Read the hook marking or confirm the shaft with a hook gauge. Enter the size in a simple inventory along with material, head style and handle type. Keep manufacturer labels as secondary information.

Make the size visible on the tool

If the original marking is tiny or worn, add a narrow removable label to the handle or its individual pocket. Do not place tape on the working shaft or where adhesive can contact yarn.

Store in a logical sequence

Arrange hooks from smallest to largest millimetre size. Separate steel thread hooks if their numbering system might cause confusion. Leave empty spaces in a roll or case so a new size can be added without rearranging everything.

• Return the hook after each project.
• Keep duplicates together.
• Mark borrowed tools in the inventory.
• Review missing sizes before buying a set.

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