Worsted weight yarn (Craft Yarn Council Category 4: Medium) is the backbone of North American knitting. Known in Australia as 10-ply and often called Afghan or Aran weight, it offers fast progress, clear stitch definition, and long-lasting durability.
Quick Specifications
Top Projects for Worsted Weight Yarn
- Cozy Pullovers & Cardigans: The classic weight for winter sweaters. Quick to knit and durable for everyday wear. Check out our Sweater Knitting Guide.
- Winter Hats & Beanies: One 100g (3.5 oz) skein is typically enough to knit a full adult beanie. Use our Yarn Calculator to estimate yardage.
- Throw Blankets & Afghans: High durability and warmth make worsted acrylics and wools the top choice for large home projects.
- Mittens & Cold-Weather Accessories: Dense enough on US 74.5 mm needles to block chilly winter winds.
Not all worsted yarns feel the same. Worsted-spun yarns (like Cascade 220) have combed, parallel fibers for smooth, defined stitches. Woolen-spun yarns (like Brooklyn Tweed Shelter) trap air for a lofty, featherlight sweater with incredible warmth.
How Much Worsted Weight Yarn Do You Need?
Worsted is the weight most US patterns are written for, so these are the numbers you will reach for most often. All figures assume stockinette at 16–20 sts per 4 in10 cm and a typical put-up of about 210 yd192 m per 3.5 oz100 g skein. Textured stitches and cables eat more — add 15–20%.
| Project | Yardage | Meters | Skeins (3.5 oz / 100 g) |
|---|---|---|---|
| Adult beanie | 110–200 yd | 100–185 m | 1 |
| Pair of mittens | 150–250 yd | 140–230 m | 1–2 |
| Cowl | 200–350 yd | 185–320 m | 1–2 |
| Child sweater (4–6 yr) | 600–800 yd | 550–730 m | 3–4 |
| Adult sweater, size S | 1,000–1,200 yd | 915–1,100 m | 5–6 |
| Adult sweater, size L | 1,200–1,500 yd | 1,100–1,370 m | 6–8 |
| Adult sweater, size 3X | 1,600–1,900 yd | 1,465–1,740 m | 8–9 |
| Throw blanket (50 × 60 in) | 1,800–2,400 yd | 1,645–2,195 m | 9–12 |
Dye lots drift. A skein bought three weeks later can read as a visible stripe across a yoke even when the color name matches. Worsted sweaters sit right at the boundary where one skein decides the size you can finish, so buy one more than the table says and return it unwound if you do not need it.
Working from a specific pattern instead? The yarn calculator converts between skein counts and total yardage, and the substitution calculator tells you how many skeins of a different yarn you need.
Recommended US & International Worsted Yarns
The most popular, verified worsted weight yarn lines across North America:
Knit Picks Wool of the Andes
100% Peruvian Highland WoolA 100% Peruvian Highland Wool worsted sold direct to consumers by Knit Picks, in solid and heathered colorways.
Brown Sheep Lamb's Pride Worsted
85% wool, 15% mohairA wool-mohair blend from Brown Sheep in Nebraska. The 15% mohair is what gives it the halo that distinguishes it from a plain worsted wool.
Cascade Yarns 220
100% Peruvian Highland WoolCascade describe 220 as a handwash staple suited to cables, lace, colorwork and felting, available in more than 150 colors. The Sport and Grande entries in this list are the same wool at other weights.
Red Heart Super Saver
100% acrylicA budget acrylic worsted sold in 7 oz198 g skeins — far larger than the 1.75 oz50 g or 3.5 oz100 g put-ups most of this list uses, which is why patterns quote it in whole skeins.
Malabrigo Worsted
100% merino woolKettle-dyed single-ply merino with tonal colorways. Being single-ply, it shows the colour rather than the stitch, which is why it suits plain garter and stockinette.
Berroco Ultra Alpaca
50% Super Fine Alpaca, 50% Peruvian WoolA half-and-half blend of super fine alpaca and Peruvian wool at worsted weight. The wool supplies the elasticity alpaca on its own lacks — see the alpaca entry in the fiber lexicon.
Caron Simply Soft
100% acrylicA budget acrylic worsted with a noticeably glossy surface, sold in 6 oz170 g skeins.
Brooklyn Tweed Shelter
100% American Targhee-Columbia WoolWoolen-spun in the USA from American Targhee-Columbia fleece. Woolen spinning traps air between the fibers, which is why 1.75 oz50 g goes as far as 140 yd128 m at worsted weight.
Frequently Asked Questions
Why is Worsted weight the most popular yarn in America?
Worsted weight is the quintessential American yarn weight. It knits up quickly on US 7–8 (4.5–5.0 mm) needles, provides excellent stitch visibility for beginners, and produces warm, sturdy sweaters, hats, mittens, and afghans without being overly bulky.
What is the difference between Worsted and Aran weight?
The Craft Yarn Council places both in Category 4 (Medium) — it does not define a separate Aran category. In mill practice Aran is spun a little heavier than Worsted. Whether that difference matters for your project — and how to swap one for the other — is covered in full on our Aran vs Worsted comparison.
How many skeins of worsted weight yarn do I need for a sweater?
For an adult sweater in worsted weight, plan on roughly 1,000–1,200 yards915–1,100 m for a size S, 1,200–1,500 yards1,100–1,370 m for a size L, and 1,600–1,900 yards1,465–1,740 m for a 3X. At a typical 210 yards192 m per 3.5 oz100 g skein that is about 5–6 skeins for a small and 8–9 for a 3X. Buy one extra skein from the same dye lot.
What is the 10-ply equivalent in the UK/Australia?
In Australia and legacy British patterns, '10-ply' corresponds directly to Worsted / Aran weight yarn.
Yarn weight categories, their standard gauge ranges and the recommended needle sizes on this page follow the Craft Yarn Council's Standard Yarn Weight System. Needle size equivalents are cross-checked against the CYC knitting needle size chart, and the WPI figures against CYC’s wraps-per-inch chart. Yardage is not part of the standard: the range shown is the spread across the yarns in our own brand guide, measured per 3.5 oz (100 g).