Yarn Weight Chart
The Craft Yarn Council’s Standard Yarn Weight System defines 8 categories (0 Lace through 7 Jumbo) with an official gauge and hook/needle range for each. The UK/Australian column is not part of that official standard — there’s no single body that maps US names onto UK/AU ply and word names, so treat it as a common approximation, not an exact equivalence. Always check a specific yarn’s own gauge on its label when it matters.
#0 — Lace
Also called: Fingering (10-count crochet thread)
UK / Australian: Lace / 1-2 ply
- Knit gauge (4in)
- 33-40 sts
- Crochet gauge (4in)
- 32-42 sts
- Needles
- US 000-1 (1.5-2.25 mm)
- Hooks
- Steel 6-8, Regular B-1 (1.4-2.25 mm)
#1 — Super Fine
Also called: Sock, Fingering, Baby
UK / Australian: 4 ply
- Knit gauge (4in)
- 27-32 sts
- Crochet gauge (4in)
- 21-32 sts
- Needles
- US 1-3 (2.25-3.25 mm)
- Hooks
- B-1 to E-4 (2.25-3.5 mm)
#2 — Fine
UK/AU name approximateAlso called: Sport, Baby
UK / Australian: 5 ply
- Knit gauge (4in)
- 23-26 sts
- Crochet gauge (4in)
- 16-20 sts
- Needles
- US 3-5 (3.25-3.75 mm)
- Hooks
- E-4 to 7 (3.5-4.5 mm)
#3 — Light
Also called: DK, Light Worsted
UK / Australian: DK (Double Knitting) / 8 ply
- Knit gauge (4in)
- 21-24 sts
- Crochet gauge (4in)
- 12-17 sts
- Needles
- US 5-7 (3.75-4.5 mm)
- Hooks
- 7 to I-9 (4.5-5.5 mm)
#4 — Medium
Also called: Worsted, Afghan, Aran
UK / Australian: Aran / 10 ply
- Knit gauge (4in)
- 16-20 sts
- Crochet gauge (4in)
- 11-14 sts
- Needles
- US 7-9 (4.5-5.5 mm)
- Hooks
- I-9 to K-10.5 (5.5-6.5 mm)
#5 — Bulky
UK/AU name approximateAlso called: Chunky, Craft, Rug
UK / Australian: Chunky / 12 ply
- Knit gauge (4in)
- 12-15 sts
- Crochet gauge (4in)
- 8-11 sts
- Needles
- US 9-11 (5.5-8 mm)
- Hooks
- K-10.5 to M-13 (6.5-9 mm)
#6 — Super Bulky
UK/AU name approximateAlso called: Super Bulky, Roving
UK / Australian: Super Chunky / 14+ ply
- Knit gauge (4in)
- 7-11 sts
- Crochet gauge (4in)
- 7-9 sts
- Needles
- US 11-17 (8-12.75 mm)
- Hooks
- M-13 to Q (9-15 mm)
#7 — Jumbo
UK/AU name approximateAlso called: Jumbo, Roving
UK / Australian: Super Chunky+ / 16+ ply
- Knit gauge (4in)
- 6 sts and fewer
- Crochet gauge (4in)
- 6 sts and fewer
- Needles
- US 17 and larger (12.75mm and larger mm)
- Hooks
- Q and larger (15mm and larger mm)
Category numbers, US names, and gauge/hook/needle figures: Craft Yarn Council Standard Yarn Weight System. UK/Australian names: a synthesis of several independent guides, cross-checked for the most commonly repeated equivalences.