Yarn

Walk into a yarn shop, and you will see a numbering system on the labels. This is the . It categorizes yarn by thickness, which dictates the size of the needle or hook required.

Yarn thickness is standardized into categories by the Craft Yarn Council. The weight determines your project's size, warmth, and drape. Category Number Weight Name Recommended Needle/Hook Size Doilies, delicate shawls, open lacework 1.5–2.25 mm 1 Super Fine / Fingering Socks, shawls, lightweight baby clothes 2.25–3.25 mm 2 Fine / Sport Lightweight sweaters, baby blankets, accessories 3.25–3.75 mm 3 Light / DK (Double Knitting) Sweaters, light cardigans, mittens, hats 3.75–4.5 mm 4 Medium / Worsted / Aran Beginners, blankets, winter sweaters, scarves 4.5–5.5 mm 5 Bulky / Chunky Thick scarves, quick beanies, heavy rugs 5.5–8 mm 6 Super Bulky Cowls, thick winter blankets, plushies 8–127 mm 7 Arm-knitting, statement home decor blankets 15 mm and up 3. How Yarn is Made: Ply and Texture Walk into a yarn shop, and you will