Many knitters wonder about the difference between lace, fingering, sport, DK, worsted and bulky (chunky) yarn. Yarn weight affects gauge, drape, texture and how your finished garment feels.
Here you’ll find a clear guide to common yarn weights, recommended needle and hook sizes, and what each weight is best suited for. Choosing the right yarn weight makes all the difference.
This guide is part of our Yarn School, your resource for fibre knowledge and yarn expertise.
What does yarn weight mean?
Yarn weight refers to how thin or thick a yarn is. It determines how many stitches you get per 10 cm (gauge) and which needle or hook size works best.
Selecting the correct yarn weight ensures that your project turns out with the right fit and feel.
Before choosing a yarn weight, it helps to understand different yarn fibres and how they behave. Learn more in our guide to yarn fibres.
Lace yarn
A very fine and lightweight yarn, ideal for delicate lacework and airy projects.
- Gauge: 32–40 sts = 10 cm
- Knitting needles: approx. 2–3 mm
- Crochet hook: approx. 1.5–2.5 mm
- Perfect for: shawls, lace knitting, lightweight garments
- Feel: delicate and fluid
Filcolana Tilia
Kaos Yarns Halo Brushed AlpacaFingering yarn
A thin and versatile yarn, commonly used for socks and baby garments.
- Gauge: 26–32 sts = 10 cm
- Knitting needles: approx. 2–3 mm
- Crochet hook: approx. 2–3 mm
- Perfect for: socks, baby garments, lightweight sweaters
- Feel: light, with excellent stitch definition
Rauma Lun Merino
Filcolana ArwettaSport yarn
Sport weight yarn sits between fingering and DK in thickness. It creates lightweight yet warm garments with beautiful stitch definition.
- Gauge: approx. 23–26 sts = 10 cm
- Knitting needles: approx. 3–3.5 mm
- Crochet hook: approx. 3–3.5 mm
- Perfect for: baby garments, lightweight sweaters, cardigans and accessories
- Feel: soft, smooth and light
Filcolana Pernilla
Casasol Bambu MDK (Double Knitting) yarn
One of the most versatile yarn weights – balanced and easy to work with.
- Gauge: 21–24 sts = 10 cm
- Knitting needles: approx. 3.5–4 mm
- Crochet hook: approx. 3.5–4.5 mm
- Perfect for: sweaters, cardigans, children’s garments
- Feel: soft and comfortably warm
Gepard Woolia
Filcolana MashdaleWorsted yarn
Slightly thicker than DK, offering more structure and warmth.
- Gauge: 18–20 sts = 10 cm
- Knitting needles: approx. 4–5 mm
- Crochet hook: approx. 4.5–5.5 mm
- Perfect for: everyday garments, hats, scarves
- Feel: soft and stable
Filcolana PeruvianAran yarn
A fuller and warmer yarn with clear stitch definition.
- Gauge: 16–18 sts = 10 cm
- Knitting needles: approx. 4.5–5.5 mm
- Crochet hook: approx. 5–6 mm
- Perfect for: textured patterns, cable sweaters, classic sweaters
- Feel: warm and structured
Rauma FivelBulky / Chunky yarn
A thick yarn that works up quickly and creates a warm, textured fabric.
- Gauge: 12–15 sts = 10 cm (knitting), 8–11 sts = 10 cm (crochet)
- Knitting needles: approx. 6–8 mm
- Crochet hook: approx. 6–9 mm
- Perfect for: hats, scarves, blankets
- Feel: soft and voluminous
Rauma Vams
Gepard PunoSuper Bulky yarn
Very thick yarn for maximum volume and warmth.
- Gauge: 7–11 sts = 10 cm
- Knitting needles: approx. 8–12 mm
- Crochet hook: approx. 8–12 mm
- Perfect for: bold statement pieces, oversized knits, large blankets
- Feel: bold and extra warm
Yarn weight and gauge chart
| Yarn weight | Stitches per 10 cm (knitting) | Recommended needles (mm) | US needle size | Recommended hook (mm) | US hook size |
|---|---|---|---|---|---|
| Lace | 32–40 sts | 2–3 mm | US 0–2 | 1.5–2.5 mm | US 7–C |
| Fingering | 26–32 sts | 2–3 mm | US 0–2 | 2–3 mm | US B–C |
| Sport | 23–26 sts | 3–3.5 mm | US 2–4 | 3–3.5 mm | US C–E |
| DK | 21–24 sts | 3.5–4 mm | US 4–6 | 3.5–4.5 mm | US E–7 |
| Worsted | 18–20 sts | 4–5 mm | US 6–8 | 4.5–5.5 mm | US 7–I |
| Aran | 16–18 sts | 4.5–5.5 mm | US 7–9 | 5–6 mm | US H–J |
| Bulky / Chunky | 12–15 sts | 6–8 mm | US 10–11 | 6–9 mm | US J–M |
| Super Bulky | 7–11 sts | 8–12 mm | US 11–17 | 8–12 mm | US L–P |
A little reminder!
Gauge and recommended needle or hook sizes are helpful guidelines, but your hands always have the final say. We all knit and crochet a little differently, so making a swatch first can make a big difference in fit and feel.
Ready to start your next project? Browse all our yarns by weight, or explore more guides in our Yarn School.