Yarn weights (Craft Yarn Council)
The eight categories that link a yarn to a plausible gauge and needle size. Guidelines only: the category gives a range, the swatch gives the number.
| # | Name | Also called | Gauge (sts / 4 in) | Needles (mm) | Needles (US) |
|---|---|---|---|---|---|
| 0 | Lace | fingering, 10-count crochet thread | 33–40 | 1.5–2.25 | 000–1 |
| 1 | Super Fine | sock, fingering, baby | 27–32 | 2.25–3.25 | 1–3 |
| 2 | Fine | sport, baby | 23–26 | 3.25–3.75 | 3–5 |
| 3 | Light | DK, light worsted | 21–24 | 3.75–4.5 | 5–7 |
| 4 | Medium | worsted, afghan, aran | 16–20 | 4.5–5.5 | 7–9 |
| 5 | Bulky | chunky, craft, rug | 12–15 | 5.5–8 | 9–11 |
| 6 | Super Bulky | super bulky, roving | 7–11 | 8–12.75 | 11–17 |
| 7 | Jumbo | jumbo, roving | 1–6 | 12.75– | 17+ |
Source: Craft Yarn Council standards. Stitch gauge only; the row gauge is always measured.