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Yarns Sorted by Weight
Well, every time we think there's a correct way to sort yarns into groups that can be used one for another, we hit a snag. The truth is that there is so much variation in yarns that it's impossible to have absolute rules on substitutions.

The Craft Yarn Council of America (CYCA) developed those handy little skeins with the numbers on them, 0 through 6, but still that isn't a complete answer for yarn substitution. There's a lot of variation among all those "4" yarns. The plain truth is you have to look at all these things, and use the infallible computer we all have (your brain!) to figure it out. Start with common sense--narrow things down first by general terms, then continue from there. You'll notice that the #3,4,&5 groups are bigger, and have more variation within them, than the thinner yarns.

What are the things that you should consider when substituting yarns? Gauge of course, but also the fiber used, smoothness, regular or irregular spin, indoor or outdoor use, and the draping of it (limp to stiff). And how do you tell these things? Sometimes it's really tough--even the color of the dye can make a difference in how a yarn works up.

  • Harmony by Jojoland Harmony by Jojoland Harmony by Jojoland

    Harmony by Jojoland

    Jojoland Harmony These yarns from Jojoland are an entirely different concept in color. Extremely gradual, subtle color changes make for a spectacular result. Every colorway is based on three main colors, and the yarn slowly changes from one to the next...

    MSRP: $9.99
    $9.49
  • Sale
    Fortissima Socka Cotton Color

    Fortissima Socka Cotton Color

    Fortissima Socka Cotton Color Self Patterning Sock yarn with cotton from Schoeller & Stahl. Here's the innovative patterned yarn with Cotton! Gorgeous self-striping, variegated colors, many of them very subtle and enticing. Famous German quality sock...

    MSRP: $19.50
    Was: $18.95
    Now: $13.95
  • Sale
    100g ball of Fortissima Socka Cotton

    Fortissima Socka Cotton 4 ply

    Fortissima Socka Cotton Classic Sock yarn with cotton from Schoeller & Stahl Famous German quality sock yarn with a high cotton content for great comfort. This yarn produces a very breathable fabric, and you'll enjoy these socks! You will notice the...

    MSRP: $16.95
    Was: $13.95
    Now: $10.50
  • Butterfly Super 10 Cotton Butterfly Super 10 Cotton

    Butterfly Super 10 Cotton

    Super 10 "Butterfly" Cotton SALE Discontinued Mercerized 100% Cotton Yarn in a big 125g skein. This is a DK weight cotton, imported from Greece.  Those who have knit with this yarn have proclaimed its excellence. Machine washable and dryable, pieces...

    MSRP: $16.99
    $10.00
  • Sale
    balls of Fortissima Socka 6 ply

    Fortissima Socka 6-Ply

    Fortissima Socka 6 ply Classic sock yarn from Schoeller & Stahl 50 gram skein Same great sock yarn only just a bit heavier--6 ply is sport weight. Use a needle one size larger than for 4ply sock yarn for socks. Due to the high percentage of virgin...

    MSRP: $7.95
    Was: $7.75
    Now: $7.00
  • Sale
    Balls of Fortissima Socka 4-Ply

    Fortissima Socka 4-Ply

    Fortissima Socka 4 ply Classic Sock yarn from Schoeller & Stahl  in 50 gram skeins. Using only the finest raw materials which are then processed with the most care possible. Due to the high percentage of virgin wool, Fortissima/Socka is...

    $6.79 - $7.29
  • Wendy Peter Pan DK

    Wendy Peter Pan DK

    Peter Pan DK Another ultra-soft baby yarn from Wendy: A new soft blend, of Acrylic & Nylon. Machine washable and tumble dry. There are approximately 340m (372 yds) per100g ball, and it knits to 26 sts and 36 rows on 3.5-4mm (US 4-6) knitting needle...

    MSRP: $10.00
    $7.50
  • Wendy Peter Pan 4 ply

    Wendy Peter Pan 4 ply

    Peter Pan 4PlyPeter Pan 4 ply acrylic & nylon baby yarn from Wendy. This is an incredibly soft blend, with a nice twist that makes it easy to knit even with the small gauge. Machine washable and tumble dry. There are approximately 412m (420 yds) per 100g...

    MSRP: $10.00
    $7.50
  • ball of Alafoss Lopi

    Alafoss Lopi Icelandic Yarn

    Original Lopi From Iceland, this 100% pure wool has a tradition of quality, which began in 1896. Icelandic Wool is lighter, warmer, and more water-resistant than that found elsewhere. This is a wool that is not over-processed--One look and you know this...

    MSRP: $12.50
    $12.25
  • Lett-Lopi Icelandic Wool

    Lett-Lopi Icelandic Wool

    Lett-lopi: Genuine 100% Pure Icelandic Lopi Wool Yarn from Istex Mills (Icelandic Textiles LTD) Worsted weight in 50 gram skeins Available in over 40 shades is Lett-Lopi, which is half the weight of Alafoss Lopi. It is a perfect alternative for those...

    MSRP: $6.75
    $6.50
  • skein of Bulky Lopi Bulky Lopi   Jöklalopi Bulky Lopi   Jöklalopi

    Bulky Lopi Jöklalopi

    Bulky Lopi  (Jöklalopi in Icelandic) Bulky Lopi is ideal for one color garments, or simple color combos like stripes. Not for fairisle color work. This yarn is somewhat thicker than Alafoss Lopi, so Bulky Lopi knits up very quickly. For the...

    MSRP: $13.00
    $12.50
  • Ball of Vivienne

    Vivienne Merino Yarn by Lang

    Vivienne by Lang This yarn is just luscious and light. Light to wear, and voluminous enough to take a US 10 needle in order to knit a worsted gauge.  Vivienne is a knitted cord, 95% merino with just enough nylon to add strength and durability. This...

    MSRP: $13.00
    $8.75
  • Ball of Sol Luxe

    Sol Luxe Cotton Yarn by Lang

    Sol Luxeby LangJust like Sol, except with a translucent nylon thread that gives a hint of a shimmer to the fabric you create. Made of the finest combed cotton, Sol Luxe gives you the quick knit of a worsted weight yarn without all the weight of...

    MSRP: $9.95
    $6.95
  • Ball of Perla

    Perla Silky Chenille Yarn

    Perla by Lang Perla is a silk fringe yarn -- pure luxury! The soft silk cord has tiny silk fringe attached that gives the finished fabric a lush, textured look, complete with the shiny luster of the finest silk. The fabric is plush, like chenille, but...

    MSRP: $21.95
    $12.95
  • Ball of Riva

    Riva Cotton Blend Yarn by Lang

    Rivaby LangRiva is a new classic, a unique cotton blend yarn for spring and summer. Two knitted yarns are printed and spun separately, to give Riva a special color effect, with beautiful repeats and combinations. The colorways are so fresh, making the...

    MSRP: $9.95
    $5.95
  • Sale
    Ball of Norma

    Norma Cotton Blend Yarn

    Normaby LangThe fiber blend of finest cotton and high quality viscose make this yarn a yarn for all purposes. Skin-friendly softness and light weight, plus an innovative cabled construction give the yarn a woolly character. An outstanding example of an...

    MSRP: $9.95
    Was: $5.35
    Now: $3.85
  • Ball of Mia

    Mia Brushed Alpaca Yarn from Lang

    Mia Brushed Alpaca Yarn from LangMia is completely luxurious — there's just nothing like baby alpaca for soft, squishy yumminess! This is an innovative alpaca yarn from the finest baby alpaca available, and high fluff functional acrylic for more...

    MSRP: $14.95
    $7.95
  • Ball of Mille Colori Socks & Lace Luxe

    Mille Colori Socks & Lace Luxe

    Mille Colori Socks & Lace LuxeSuperwash merino by Lang Absolutely stunning, this is Lang's concept of what a fancy, spangled laceweight yarn should be. It is two ply, with a very long color repeat plus just a little glitz-- great for lace projects,...

    MSRP: $21.95
    $15.95
  • Mille Colori Baby Luxe by Lang

    Mille Colori Baby Luxe by Lang

    Mille Colori Baby LuxeSuperwash merino by Lang Just like Mille Colori Baby of Zick-Zack Scarf fame, but with a tiny lurex thread that provides a hint of glitz. It's a single ply, very long repeat fine yarn, great for lace projects, fine knits, and more...

    MSRP: $12.95
    $7.50
  • Ball of Ella Swatch of Ella

    Ella multi-textured yarn by Lang

    Ellaby LangNew and vibrant, Ella makes a real fashion statement. The yarn structure changes continually and in a somewhat random sequence to produce different characteristics: Sometimes matte, sometimes shiny, sometimes transparent, sometimes opaque. The...

    MSRP: $11.95
    $7.50
  • Sale
    Ball of Aurora Yarn Garments made with Aurora yarn

    Aurora chainette yarn by Lang

    Auroraby LangAurora is a special construction of two chainette yarns, different colours, connected lengthwise. One side of each yarn is shot with color, creating the most exciting color patterning. Primarily cotton, Aurora is a spectacular way to...

    MSRP: $11.95
    Was: $10.95
    Now: $7.00
  • Ball of Anais

    Anais wool and alpaca yarn

    Anais is a light yet quick to knit discontinued yarn with lovely color blending. Great for any bulky project--the chain construction makes it light to wear. 36% new wool, 17% baby alpaca, 47% acrylic 50g skein is about 40m (44 yds) 9st & 13 r = 4"...

    MSRP: $10.95
    $5.65