Light yarn (CYC 3)
The short answer
This yarn is called Light in the US and DK in the UK, aibuto in Japan. Use a hook between 4.5 mm and 5.5 mm with it.
CYC weight 3 — Light in the US, DK in the UK, aibuto (合太) in Japan. Garments, granny squares, wearable blankets.
| CYC number | 3 |
|---|---|
| US | Light, DK, Light Worsted |
| UK | DK, 8 ply |
| Australia | 8 ply |
| Japan | 合太 (aibuto, "plied, thick") unverified |
| Wraps per inch | 11-15 |
| Hook range | 4.5–5.5 mm |
| Single crochet gauge | 12-17 sts / 4 in |
On Japanese yarn
Japanese yarn is normally sold by ball weight with a stated metres-per-gram rather than by a
weight category. The names above are conventional descriptions, not a standard. When substituting,
match metres per gram, not the category name.
Hooks for this weight
Light yarn
Acrylic, cotton and wool options at this weight.
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Other weights
Last updated 2026-08-30.