Standard Yarn Weight System

Yarn Symbol
0 ~ Lace
Yarn Type
10 count crochet thread fingering
Knit Gauge Range (stockinette stitch of 4")
33-40 sts
Recommended needle size (metric)
1.5-2.25 mm
Recommended needle size (US)
000-1

Yarn Symbol
1 ~ Superfine
Yarn Type
Sock, Fingering
Knit Gauge Range (stockinette stitch of 4")
27-32
Recommended needle size (metric)
2.25-3.25 mm
Recommended needle size (US)
1 to 3

Yarn Symbol
2 ~ Fine
Yarn Type
Sport, Baby
Knit Gauge Range (stockinette stitch of 4")
23-26 sts
Recommended needle size (metric)
3.25-3.75 mm
Recommended needle size (US)
3 to 5

Yarn Symbol
3 ~ Light
Yarn Type
DK, light worsted
Knit Gauge Range (stockinette stitch of 4")
21-24 sts
Recommended needle size (metric)
3.75-4.5 mm
Recommended needle size (US)
5 to 7

Yarn Symbol
4 ~ Medium
Yarn Type
Worsted, Afghan, Aran
Knit Gauge Range (stockinette stitch of 4")
16-20 sts
Recommended needle size (metric)
4.5-5.5 mm
Recommended needle size (US)
7 to 9

Yarn Symbol
5 ~ Bulky
Yarn Type
Chunky, Craft, Rug
Knit Gauge Range (stockinette stitch of 4")
12-15 sts
Recommended needle size (metric)
5.5-8 mm
Recommended needle size (US)
9 to 11

Yarn Symbol
6 ~ Super Bulky
Yarn Type
Bulky, Roving
Knit Gauge Range (stockinette stitch of 4")
6-11 sts
Recommended needle size (metric)
8 mm and larger
Recommended needle size (US)
11 and larger