Yarn weights

Understanding yarn weights can be a little confusing for crocheters of all skill levels. Especially when reading patterns from around the world. However it’s not as complicated as you might think. So i have put together a simple guide to understanding yarn weights for your reference.

There are 7 categories which yarn weights fall into. Weight 0 being the lightest (thinnest). Weight 7 being the heaviest (thickest). Depending where you are in the world the name you may call the yarn may vary. For example, someone in the U.K. may call weight 4 yarn Aran. In addition, someone in America might have the exact same yarn but call it worsted. Meanwhile others may call it 10 or 12 ply yarn, medium weight yarn or afghan yarn. To sum up they are all weight 4 medium yarn, just known by different names.

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Yarn weights explained


This yarn weight is known as

  • 1-3 ply
  • Lace
  • Fingering
  • Tread
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This yarn weight is known as

  • 4 ply
  • Super fine
  • Fingering
  • Sock
  • Baby
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This yarn weight is known as

  • 5 ply
  • Fine
  • Sport
  • Baby
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This yarn weight is known as

  • 8 ply
  • DK (double knit)
  • Light
  • Light worsted
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This yarn weight is known as

  • 10-12 ply
  • Medium
  • Aran
  • Worsted
  • Afghan
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This yarn weight is known as

  • 12-14 ply
  • Chunky
  • Rug
  • Bulky
  • Craft
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This yarn weight is known as

  • 14-16 ply
  • Super bulky
  • Super chunky
  • Roving
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This yarn weight is known as

  • 16+ ply
  • Jumbo
  • Roving

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