6.5 mm crochet hook (K-10½)
A 6.5 mm crochet hook is a US K-10½ in the Craft Yarn Council chart.
It is in the recommended hook range for 4 Medium, 5 Bulky yarn (Worsted, afghan, aran; Chunky, craft, rug). Amigurumi often uses a hook a size or two smaller than the label says, for a tight fabric.
Hooks around 6.5 mm
Hooks around 6.5 mm| mm | US | Yarn weights |
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| 5.5 mm | I-9 | 3 Light, 4 Medium |
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| 6 mm | J-10 | 4 Medium |
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| 6.5 mm | K-10½ | 4 Medium, 5 Bulky |
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| 7 mm | — | 5 Bulky |
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| 8 mm | L-11 | 5 Bulky |
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Yarn weights for a 6.5 mm hook
Yarn weights for a 6.5 mm hook| Weight | Crochet gauge | Hooks |
|---|
| 4 Medium | 11–14 sc per 4 in (10 cm) | 5.5–6.5 mm (US I-9 – K-10½) |
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| 5 Bulky | 8–11 sc per 4 in (10 cm) | 6.5–9 mm (US K-10½ – M-13) |
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The same size in knitting needles
A 6.5 mm knitting needle is US 10½ (old UK / Canadian size 3).
Sizes from the Craft Yarn Council’s Hooks & Needles standard. Letters and numbers vary between brands, so go by the millimeter size printed on the hook. UK and Canadian hooks are sold in mm.
Frequently asked questions
What letter is a 6.5 mm crochet hook?
In US sizes a 6.5 mm hook is K-10½. Letters can differ a little between brands, so go by the millimeter size printed on the hook.
What yarn goes with a 6.5 mm crochet hook?
It is in the recommended hook range for 4 Medium, 5 Bulky yarn (Worsted, afghan, aran; Chunky, craft, rug). Amigurumi often uses a hook a size or two smaller than the label says, for a tight fabric.
Are crochet hook sizes the same in every country?
The millimeter size is. US hooks add a letter and number, and older UK hooks used a different number scale, so always check the mm.