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Worsted Weight Yarns

Worsted Weight yarns are thicker than DK yarns and thinner than Chunky,
approximately 200 - 220 yards per 100g.

These typically work for patterns requiring 4.5 - 5 stitches per inch.

This collection includes the perfect yarn for all sorts of projects: self striping yarn eco-friendly yarn, superwash merino and more.

Click below for pattern suggestions and project ideas. 


  • Blue Sky Sweater - String Theory Yarn Co
    Blue Sky Sweater - String Theory Yarn Co
    Blue Sky Fibers

    Blue Sky Sweater


    Soft, family friendly and machine washable. Blue Sky Sweater (formerly known as Spud and Chloe Sweater) is versatile and the perfect blend of super...

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  • Borocera Silk - String Theory Yarn Co
    Borocera Silk - String Theory Yarn Co
    Handspun Hope

    Borocera Silk


    Wild Borocera Silk is hand spun in the central highlands of Madagascar. This gorgeous "thick and thin" yarn is imported into Rwanda as a single ply...

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  • Berroco



    Feathery soft and offered in a beautiful range of multis and solids, Bozzolo is a 100% cotton yarn from Italy. Smooth with a hint of shine, Bozzolo...

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  • Dream in Color



    Dream in Color Classy is an incredibly soft worsted weight yarn spun of an extra fine micron count merino superwash wool. It’s versatility as well ...

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  • Clean Cotton in Yarn - Worsted | String Theory Yarn Co

    Clean Cotton


    Eco-friendly reclaimed fiber dappled with bright color for maximum joy. It feels good, and you'll feel good using it! 55g/96 yds  I  85% recycled ...

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    Misha & Puff


    This yarn is listed as worsted, but it knits up beautifully from 14 - 22 stitches per inch - just depends on what kind of fabric you are looking fo...

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  • Peace Fleece Worsted in Yarn - Worsted | String Theory Yarn Co
    Peace Fleece

    Peace Fleece Worsted


    Peace Fleece dramatically softens and fluffs up with washing and use. We actually throw finished sweaters into a cold gentle wash cycle with very g...

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  • Penn Ave - String Theory Yarn Co
    Penn Ave - String Theory Yarn Co
    Plied Yarns

    Penn Ave


    Penn Ave is made from two strands of hand-dyed yarn. Both Penn Ave and North Ave (the original Plied yarn) have the same unique Plied characteristi...

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  • KnitCircus



    Ringmaster is 100% superwash Merino and you simply won't believe how round and soft and squishy it is. This yarn is wonderful for shawls, scarves, ...

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  • Rios - String Theory Yarn Co
    Malabrigo Yarn



    Soft, strong, and washable, this 4-ply yarn is our workhorse! The plies help resist pilling and washability makes it fantastic for frequently-worn ...

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  • Berroco



    Meet our newest recycled yarn, Seaspun, a 50/50 cotton and SEAQUAL polyester blend. SEAQUAL is made from 10% reclaimed plastic from the ocean. It h...

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  • Uneek Worsted - String Theory Yarn Co
    Uneek Worsted - String Theory Yarn Co
    Urth Yarns

    Uneek Worsted


    Uneek worsted creates short waves of self-striping magic  in hand-dyed vibrant and bold colorways. Urth Yarns plants a tree in  Africa for each ske...

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  • Gothfarm Yarn

    Worsted weight yarns*

    from $35.00

    *Part of the Gothfarm trunk show at String Theory through April 20, 2024. No returns or exchanges permitted on trunk show purchases. Monica Kortsha...

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