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Yarn by Weight

Yarn by Weight

Achieving the correct gauge starts with choosing the right yarn by weight.  See the full yarn weight chart with ply conversions. Whether you are following a pattern that calls for delicate lace or a trendy, oversized chunky knit, our collection makes it simple to filter yarns to find exactly what you need.   From "Category 0" threads to "Category 7" jumbo roving, we carry all types of yarn weight to ensure your finished project has the perfect drape, warmth, and stitch definition.  Use our weight filters below to explore your favorite fibers in the specific thickness your pattern requires. 

Lace: > 8 sts or > 8 sc  = 1" | Fingering: 7–8 sts or 5.25–8 sc = 1" | Sport: 6–6.75 sts or 4–5 sc = 1" | DK: 5.25–6 sts or 3–4.25 sc = 1" | Worsted: 4–5 sts or 2.75–3.5 sc = 1" | Heavy Worsted/Aran: 4 sts or 2.75–3.5 sc = 1" | Bulky: 3–3.75 sts or 2–2.75 sc = 1" | Super Bulky: < 2.75 sts or 1.75–2.25 sc = 1"

Please note that Novelty yarns vary, so be sure to check the yarn specifications for your project.


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SALE Cascade Yarns Heritage Yarn - Superwash Merino 4 Ply 54 options
Cascade Yarns Heritage Yarn - Superwash Merino 4 Ply

75% Merino Wool 25% Nylon, 437yds (400m)/100g (3.53oz), Fingering

$9.00
$12.00
SALE Valley Yarns Huntington Yarn - Merino Wool 4 Ply 32 options
Valley Yarns Huntington Yarn - Merino Wool 4 Ply

75% Merino Wool 25% Nylon, 218yds (199m)/50g (1.76oz), Fingering

$5.62
$7.49
SALE Malabrigo Mechita Merino Fingering Yarn - Superwash Merino Fingering 65 options
Malabrigo Mechita Merino Fingering Yarn - Superwash Merino Fingering

100% Merino Wool, 420yds (384m)/100g (3.53oz), Fingering

$17.80
$22.25
Cascade Yarns 220 Fingering Yarn - Wool Fingering 23 options
Cascade Yarns 220 Fingering Yarn - Wool Fingering

100% Wool, 273yds (250m)/50g (1.76oz), Fingering

$5.75
Scheepjes Whirl Yarn - Cotton 4 Ply 26 options
Scheepjes Whirl Yarn - Cotton 4 Ply

60% Cotton 40% Acrylic, 1094yds (1000m)/225g (7.94oz), Fingering

$30.00
SALE Valley Yarns Charlemont Yarn - Superwash Merino 4 Ply 17 options
Valley Yarns Charlemont Yarn - Superwash Merino 4 Ply

60% Merino Wool 20% Silk 20% Polyamide, 439yds (401m)/100g (3.53oz), Fingering

$13.12
$17.49
SALE Tahki Yarns Donegal Tweed Fine Yarn - Wool Fingering 20 options
Tahki Yarns Donegal Tweed Fine Yarn - Wool Fingering

70% Wool 30% Mohair, 218yds (199m)/50g (1.76oz), Fingering

$6.37
$8.49
Universal Yarn Bamboo Pop Sock Yarn - Bamboo Fingering 27 options
Universal Yarn Bamboo Pop Sock Yarn - Bamboo Fingering

55% Bamboo 37% Cotton 8% Other, 492yds (450m)/100g (3.53oz), Fingering

$12.00
SALE Koigu KPPPM Yarn - Merino Wool Fingering 56 options
Koigu KPPPM Yarn - Merino Wool Fingering

100% Merino Wool, 175yds (160m)/50g (1.76oz), Fingering

$14.40
$18.00
Cascade Yarns 220 Superwash Fingering Yarn 11 options
Cascade Yarns 220 Superwash Fingering Yarn

100% Merino Wool, 219yds (200m)/50g (1.76oz), Fingering

$7.00
SALE Malabrigo Ultimate Sock Yarn - Merino 4 Ply 25 options
Malabrigo Ultimate Sock Yarn - Merino 4 Ply

75% Merino Wool 25% Nylon, 421yds (385m)/100g (3.53oz), Fingering

$18.40
$23.00
SALE Cascade Yarns Heritage Silk Yarn - Merino Wool 4 Ply 21 options
Cascade Yarns Heritage Silk Yarn - Merino Wool 4 Ply

85% Merino Wool 15% Silk, 437yds (400m)/100g (3.53oz), Fingering

$14.63
$19.50
SALE Rowan Summerlite 4 Ply Yarn - Cotton 4 Ply 20 options
Rowan Summerlite 4 Ply Yarn - Cotton 4 Ply

100% Cotton, 191yds (175m)/50g (1.76oz), Fingering

$7.88
$10.50
Berroco Vintage Sock Yarn - Acrylic 4 Ply 16 options
Berroco Vintage Sock Yarn - Acrylic 4 Ply

52% Acrylic 40% Wool 8% Nylon, 437yds (400m)/100g (3.53oz), Fingering

$11.00
Koigu KPPPM Pencil Box Set Yarn - Merino Wool 4 Ply 19 options
Koigu KPPPM Pencil Box Set Yarn - Merino Wool 4 Ply

100% Merino Wool, 850yds (777m)/250g (8.82oz), Fingering

$80.00
Universal Yarn Uni Merino Mini Yarn - Merino Wool 4 Ply 32 options
Universal Yarn Uni Merino Mini Yarn - Merino Wool 4 Ply

75% Merino Wool 25% Nylon, 109yds (100m)/25g (0.88oz), Fingering

$5.49
SALE Blue Sky Fibers Woolstok Light Yarn - Wool Fingering 13 options
Blue Sky Fibers Woolstok Light Yarn - Wool Fingering

100% Wool, 218yds (199m)/50g (1.76oz), Fingering

$8.10
$10.80
Valley Yarns Huntington Splash Yarn - Merino Wool 4 Ply 10 options
Valley Yarns Huntington Splash Yarn - Merino Wool 4 Ply

75% Merino Wool 25% Nylon, 436yds (399m)/100g (3.53oz), Fingering

$22.99
SALE Paintbox Yarns Cotton 4 ply Yarn - Cotton 4 Ply 31 options
Paintbox Yarns Cotton 4 ply Yarn - Cotton 4 Ply

100% Cotton, 186yds (170m)/50g (1.76oz), Fingering

$3.15
$4.85
SALE Malabrigo Finito Yarn - Merino 4 Ply 8 options
Malabrigo Finito Yarn - Merino 4 Ply

100% Merino Wool, 200yds (183m)/50g (1.76oz), Fingering

$12.30
$16.40
SALE Sesia Bio Bimbo Yarn - Cotton 4 Ply 18 options
Sesia Bio Bimbo Yarn - Cotton 4 Ply

100% Cotton, 196yds (179m)/50g (1.76oz), Fingering

$8.24
$10.99
SALE Koigu KPM Yarn - Merino Wool Fingering 15 options
Koigu KPM Yarn - Merino Wool Fingering

100% Merino Wool, 175yds (160m)/50g (1.76oz), Fingering

$14.40
$18.00
SALE Malabrigo Mora Yarn - Silk Fingering 20 options
Malabrigo Mora Yarn - Silk Fingering

100% Silk, 225yds (206m)/50g (1.76oz), Fingering

$18.24
$22.80
SALE Paintbox Yarns Socks Yarn - Wool 4 Ply 47 options
Paintbox Yarns Socks Yarn - Wool 4 Ply

75% Wool 25% Polyamide, 427yds (390m)/100g (3.53oz), Fingering

$7.80
$12.00
Sirdar Snuggly Cashmere Merino Silk 4-Ply Yarn - Merino Wool 4 Ply 6 options
Sirdar Snuggly Cashmere Merino Silk 4-Ply Yarn - Merino Wool 4 Ply

75% Merino Wool 20% Silk 5% Cashmere, 186yds (170m)/50g (1.76oz), Fingering

$13.00
Debbie Bliss Fine Donegal Yarn - Wool Fingering 26 options
Debbie Bliss Fine Donegal Yarn - Wool Fingering

95% Wool 5% Cashmere, 416yds (380m)/100g (3.53oz), Fingering

$26.00
SALE Noro Silk Garden Sock Yarn - Wool Fingering 4 options
Noro Silk Garden Sock Yarn - Wool Fingering

40% Wool 25% Silk 25% Polyamide 10% Mohair, 328yds (300m)/100g (3.53oz), Fingering

$21.20
$26.50
SALE Malabrigo Metamorphosis Sock Merino 4 Ply Yarn - Superwash Merino 4 Ply 9 options
Malabrigo Metamorphosis Sock Merino 4 Ply Yarn - Superwash Merino 4 Ply

100% Merino Wool, 400yds (366m)/100g (3.53oz), Fingering

$19.20
$24.00
Debbie Bliss Rialto 4 Ply Yarn - Merino Wool 4 Ply 43 options
Debbie Bliss Rialto 4 Ply Yarn - Merino Wool 4 Ply

100% Merino Wool, 197yds (180m)/50g (1.76oz), Fingering

$11.00
SALE Cascade Yarns Cherub Sock Yarn - Nylon 4 Ply 23 options
Cascade Yarns Cherub Sock Yarn - Nylon 4 Ply

55% Nylon 45% Acrylic, 458yds (419m)/100g (3.53oz), Fingering

$4.25
$8.50
SALE Plymouth Diversity Yarn - Acrylic 4 Ply 6 options
Plymouth Diversity Yarn - Acrylic 4 Ply

93% Acrylic 7% Polyester, 420yds (384m)/100g (3.53oz), Fingering

$4.00 - $8.00
$8.00
Valley Yarns Huntington Coned Sock Yarn - 2lb Cone Yarn - Superwash Merino 4 Ply
Valley Yarns Huntington Coned Sock Yarn - 2lb Cone Yarn - Superwash Merino 4 Ply

75% Merino Wool 25% Nylon, 4260yds (3895m)/998g (35.2oz), Fingering

$94.49
Valley Yarns Huntington 100 Gram Hanks Yarn - Merino Wool 4 Ply
Valley Yarns Huntington 100 Gram Hanks Yarn - Merino Wool 4 Ply

75% Merino Wool 25% Nylon, 436yds (399m)/100g (3.53oz), Fingering

$11.99
Koigu Painter's Palette 25th Anniversary Pack Yarn - Merino Wool 4 Ply
Koigu Painter's Palette 25th Anniversary Pack Yarn - Merino Wool 4 Ply

100% Merino Wool, 1050yds (960m)/300g (10.58oz), Fingering

$96.00
SALE Sesia Flora Paillettes Yarn - Cotton Fingering 7 options
Sesia Flora Paillettes Yarn - Cotton Fingering

95% Cotton 5% Polyester, 114yds (104m)/25g (0.88oz), Fingering

$10.50
$14.00
Koigu Paint Cans Yarn - Merino Wool 4 Ply 9 options
Koigu Paint Cans Yarn - Merino Wool 4 Ply

100% Merino Wool, 435yds (398m)/125g (4.41oz), Fingering

$40.00
West Yorkshire Spinners Signature 4 Ply Yarn - Wool 4 Ply 4 options
West Yorkshire Spinners Signature 4 Ply Yarn - Wool 4 Ply

75% Wool 25% Nylon, 437yds (400m)/100g (3.53oz), Fingering

$19.50
Adriafil Calzasocks Solids Yarn - Superwash Wool 4 Ply 10 options
Adriafil Calzasocks Solids Yarn - Superwash Wool 4 Ply

75% Wool 25% Nylon, 459yds (420m)/100g (3.53oz), Fingering

$16.99
SALE Debbie Bliss Fine Donegal 50g Yarn - Wool Fingering 12 options
Debbie Bliss Fine Donegal 50g Yarn - Wool Fingering

95% Wool 5% Cashmere, 208yds (190m)/50g (1.76oz), Fingering

$9.80
$14.00
Koigu KPPPM Painter's Fade Palette Pack Yarn - Merino Wool 4 Ply 6 options
Koigu KPPPM Painter's Fade Palette Pack Yarn - Merino Wool 4 Ply

100% Merino Wool, 1575yds (1440m)/450g (15.87oz), Fingering

$148.50
Rowan Fine Tweed Haze Yarn - Alpaca 4 Ply 13 options
Rowan Fine Tweed Haze Yarn - Alpaca 4 Ply

37% Alpaca 37% Wool 13% Polyamide 9% Cotton 4% Polyester, 235yds (215m)/50g (1.76oz), Fingering

$21.50
SALE Berroco Vintage Sock Handpaint Yarn - Acrylic 4 Ply 10 options
Berroco Vintage Sock Handpaint Yarn - Acrylic 4 Ply

52% Acrylic 40% Wool 8% Nylon, 437yds (400m)/100g (3.53oz), Fingering

$12.00
$16.00
Blue Sky Fibers Prairie Yarn - Alpaca 4 Ply 14 options
Blue Sky Fibers Prairie Yarn - Alpaca 4 Ply

53% Alpaca 47% Baby Alpaca, 273yds (250m)/50g (1.76oz), Fingering

$15.80
Plymouth Yarn Electra-Lite Yarn - Merino Wool 4 Ply 3 options
Plymouth Yarn Electra-Lite Yarn - Merino Wool 4 Ply

75% Merino Wool 20% Nylon 5% Lurex, 425yds (389m)/100g (3.53oz), Fingering

$18.99
Koigu KPPPM Festive Mini Skein Set Yarn - Merino Wool 4 Ply 4 options
Koigu KPPPM Festive Mini Skein Set Yarn - Merino Wool 4 Ply

100% Merino Wool, 2175yds (1989m)/25g (0.88oz), Fingering

$200.00
Cascade Cotton Sox Splash Yarn - Cotton 4 Ply 14 options
Cascade Cotton Sox Splash Yarn - Cotton 4 Ply

89% Cotton 11% Nylon, 433yds (396m)/100g (3.53oz), Fingering

$12.00
King Cole Rebel 4Ply Yarn - Superwash Wool Fingering 6 options
King Cole Rebel 4Ply Yarn - Superwash Wool Fingering

75% Wool 25% Nylon, 437yds (400m)/100g (3.53oz), Fingering

$12.29
Koigu Supernova MKAL 2023 Yarn Pack Yarn - Merino Wool 4 Ply 5 options
Koigu Supernova MKAL 2023 Yarn Pack Yarn - Merino Wool 4 Ply

100% Merino Wool, 400yds (366m)/400g (14.11oz), Fingering

$129.00
Universal Yarn Uni Merino Mini Neons Yarn - Superwash 4 Ply 5 options
Universal Yarn Uni Merino Mini Neons Yarn - Superwash 4 Ply

75% Merino Wool 25% Nylon, 109yds (100m)/25g (0.88oz), Fingering

$5.50
Koigu KPPPM WEBS 50th Anniversary Pencil Box Set Yarn - Merino Wool 4 Ply
Koigu KPPPM WEBS 50th Anniversary Pencil Box Set Yarn - Merino Wool 4 Ply

100% Merino Wool, 850yds (777m)/250g (8.82oz), Fingering

$96.00
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Understanding Different Types of Yarn Weight

In the world of fiber arts, "weight" refers to the thickness of the yarn strand rather than the physical heaviness of the ball. Standardized yarn weights help crafters substitute fibers while maintaining the same scale. If your pattern calls for a specific weight and you aren’t sure where to start, here is a quick guide to the most common categories:

  • Lace & Fingering (Weights 0-1): These ultra-fine yarns are the best yarn for socks, lightweight shawls, and intricate lace edgings.
  • Sport & DK (Weights 2-3): Often called "lightweight" yarns, these are versatile favorites for baby clothes, spring cardigans, and stranded colorwork.
  • Worsted & Aran (Weight 4): This is the most popular yarn weight, prized for its balance of speed and stitch definition—ideal for sweaters, blankets, and hats.
  • Bulky & Super Bulky (Weights 5-6): Perfect for quick-knit gifts, these thick fibers create warm, cozy textures that work up in a flash on large needles or hooks.

Why Does Yarn Weight Matter?

Selecting the correct weight isn't just about the look; it’s about achieving gauge. If the yarn is too thin, your sweater will be too small; if it’s too thick, your project will be stiff and oversized. By matching your yarn weight to the designer's recommendation, you ensure the drape, durability, and size are exactly where they need to be.

Expert Tip: Always check your ball band! Most manufacturers list the Craft Yarn Council (CYC) number (0–7) right on the label to help you identify the weight at a glance.

How to Verify Your Yarn Weight: WPI and Gauge

If you have a mystery skein in your stash, you can determine its weight by measuring Wraps Per Inch (WPI). By wrapping the yarn snugly around a ruler, you can count how many times it fits into an inch to identify its category. We’ve also included the typical knitting gauge below to help you cross-reference your results and ensure your chosen pattern will have the perfect drape and fit.

Lace Weight: 18+ WPI, 32–40+ sts / 4"

Fingering Weight: 14–18 WPI, 27–32 sts / 4"

Sport Weight: 12–14 WPI, 23–26 sts / 4"

DK Weight: 11–13 WPI, 21–24 sts / 4"

Worsted Weight: 9–11 WPI, 16–20 sts / 4"

Heavy Worsted / Aran: 8–9 WPI, 16–18 sts / 4"

Bulky Weight: 6–8 WPI, 12–15 sts / 4"

Super Bulky: 5–6 WPI, 6–11 sts / 4"

Why Buy Yarn by Weight at WEBS?

When you shop for yarn by weight at WEBS, you aren't just getting variety—you're getting expertise. We categorize our yarns according to the Craft Yarn Council standards to take the guesswork out of your shopping experience. This ensures you can easily find the perfect match for your project, whether you're searching for a delicate lace or a cozy super bulky, with the confidence that every skein will meet your specific gauge and texture needs.

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