Field Guide to Yarn Weights

Typically 32–40 stitches per 10 cm (4 in) for lace weight yarn. Some patterns knit lace weight yarn at a much lower gauge for light, airy fabrics.

Needles between 1.5–3.5 mm are most commonly used. Use the higher end of this range if you want an open, airy fabric, and the smaller end if you want a denser, more structured fabric.

Lace weight yarn is widely used for projects that benefit from delicate stitch patterns and lightweight fabrics. Many knitters choose this yarn weight for lace shawls, fine scarves, lightweight garments, and heirloom knitting. Because it is an extremely fine yarn, projects made with lace yarn typically take longer to complete than those made with heavier yarn weights.

Cobweb yarn is an extremely fine form of lace weight yarn, often used for very delicate lace knitting. Not all lace yarns are cobweb weight, however, and patterns will usually specify the intended gauge.

Lace weight yarn is the finest commonly used yarn weight and sits below fingering weight yarn in thickness.

Lace yarn is sometimes referred to as cobweb yarn when it is spun extremely fine. In the Craft Yarn Council system it corresponds to Category #0 (lace weight). Because yarn thickness can vary between manufacturers, checking the recommended gauge is the most reliable way to compare yarns.

Typically 27–32 stitches per 10 cm (4 in) for fingering weight yarn.

Needles between 2.25–3.25 mm are most commonly used. Use the higher end of this range if you want a relaxed, soft fabric, and the smaller end of this range if a tight, durable fabric is what you need.

Fingering weight yarn is widely used for projects that benefit from a fine gauge and detailed stitch work. Many knitters choose this yarn weight for socks, shawls, lightweight garments, and accessories. It is a finer yarn, so the trade-off is that it will take longer to produce a garment out of this yarn than most other weights.

Most sock yarns are fingering weight yarn, though they often include nylon for durability. However, not every yarn suitable for socks is automatically fingering weight. Check the recommended gauge for the yarn and see whether it falls in the 27–32 stitches per 10 cm (4 in) range commonly used for fingering weight patterns.

Fingering weight yarn sits between lace weight yarn and sport weight yarn in thickness. Some patterns written for these neighbouring yarn weights may be adaptable to fingering yarn. It is always recommended to make a gauge swatch first when attempting a substitution like this.

Typically 23–26 stitches per 10 cm (4 in) for sport weight yarn.

Needles between 3.25–3.75 mm are most commonly used. Use the higher end of this range if you want a relaxed, soft fabric, and the smaller end if you want a tighter, more structured fabric.

Sport weight yarn is widely used for projects that benefit from a balance between lightness and structure. Many knitters choose this yarn weight for lightweight sweaters, baby garments, accessories, and textured knitting. It produces a finer fabric than DK or worsted yarn, but works up more quickly than fingering weight yarn.

In some regions, sport weight yarn is referred to as 5-ply yarn. However, ply count does not always perfectly correspond to yarn thickness, so checking the recommended gauge is the most reliable way to compare yarns.

Sport weight yarn sits between fingering weight yarn and DK weight yarn in thickness. Some patterns written for these neighbouring yarn weights may be adaptable to sport yarn. It is always recommended to make a gauge swatch first when attempting a substitution like this.

Sport yarn is sometimes referred to as 5-ply yarn in the UK, Australia, and New Zealand. In the Craft Yarn Council system it generally falls within Category #2 (fine yarn). Because ply terminology does not always correspond exactly to yarn thickness, checking the recommended gauge is the best way to compare yarns.

Typically 21–24 stitches per 10 cm (4 in) for DK weight yarn.

Needles between 3.75–4.5 mm are most commonly used. Use the higher end of this range if you want a relaxed, soft fabric, and the smaller end if you want a tighter, more durable fabric.

DK weight yarn is widely used for projects that benefit from versatility and balanced fabric structure. Many knitters choose this yarn weight for sweaters, hats, scarves, blankets, and garments for all ages. It offers a good balance between warmth, drape, and knitting speed.

DK stands for “double knitting,” and the terms are often used interchangeably. However, the name refers to the yarn weight rather than the knitting technique.

DK weight yarn sits between sport weight yarn and worsted weight yarn in thickness. Some patterns written for these neighbouring yarn weights may be adaptable to DK yarn. It is always recommended to make a gauge swatch first when attempting a substitution like this.

DK stands for “double knitting,” and the terms are often used interchangeably. In Australia and New Zealand this yarn weight is commonly called 8-ply yarn. In the United States it may occasionally be described as light worsted yarn, and it generally corresponds to Craft Yarn Council Category #3 (light yarn). Because terminology varies between manufacturers, checking the recommended gauge is the most reliable way to compare yarns.

Typically 16–20 stitches per 10 cm (4 in) for worsted weight yarn.

Needles between 4.5–5.5 mm are most commonly used. Use the higher end of this range if you want a relaxed, soft fabric, and the smaller end if you want a tighter, more structured fabric.

Worsted weight yarn is widely used for projects that benefit from warmth and durability. Many knitters choose this yarn weight for sweaters, hats, scarves, blankets, and everyday accessories. It is one of the most commonly used yarn weights for garments and home projects, and offers an excellent balance between potential for detailed work and quick production.

Aran yarn is usually slightly heavier than worsted weight yarn, though the two categories can sometimes overlap depending on the manufacturer. Checking the recommended gauge is the best way to compare yarns.

Worsted weight yarn sits between DK weight yarn and aran weight yarn in thickness. Some patterns written for these neighbouring yarn weights may be adaptable to worsted yarn. It is always recommended to make a gauge swatch first when attempting a substitution like this.

Worsted yarn is sometimes referred to as Afghan yarn or medium weight yarn in the United States. In the Craft Yarn Council system it corresponds to Category #4 (medium yarn). In some regions yarns described as aran weight may overlap with heavier worsted yarns, so checking the recommended gauge is the best way to compare yarns.

Typically 14–18 stitches per 10 cm (4 in) for aran weight yarn.

Needles between 5–6 mm are most commonly used. Use the higher end of this range if you want a relaxed, soft fabric, and the smaller end if you want a tighter, more structured fabric.

Aran weight yarn is widely used for projects that benefit from warmth and strong stitch definition. Many knitters choose this yarn weight for sweaters, outerwear, blankets, and textured knitting such as cables and ribbing. It produces a thicker fabric than worsted yarn while still maintaining good detail in stitch patterns.

Aran yarn is usually slightly thicker than worsted weight yarn, though the two categories can sometimes overlap depending on the manufacturer. Checking the recommended gauge is the best way to compare yarns.

Aran weight yarn sits between worsted weight yarn and bulky weight yarn in thickness. Some patterns written for these neighbouring yarn weights may be adaptable to aran yarn. It is always recommended to make a gauge swatch first when attempting a substitution like this.

Aran yarn is sometimes described as heavy worsted yarn, particularly in North America. In the UK and Ireland it is often associated with traditional Aran sweater knitting. Depending on the manufacturer it may fall within the heavier end of Craft Yarn Council Category #4 (medium yarn). Because naming conventions vary, checking the recommended gauge is the most reliable way to compare yarns.

Typically 12–15 stitches per 10 cm (4 in) for bulky weight yarn.

Needles between 6–8 mm are most commonly used. Use the higher end of this range if you want a relaxed, soft fabric, and the smaller end if you want a tighter, more structured fabric.

Bulky weight yarn is widely used for projects that benefit from warmth and fast knitting. Many knitters choose this yarn weight for scarves, hats, blankets, and cozy garments. Because the yarn is thicker, projects knit with bulky yarn typically work up much faster than those made with lighter yarn weights.

Bulky yarn is often referred to as chunky yarn, though terminology can vary between manufacturers. Checking the recommended gauge is the best way to compare yarns.

Bulky weight yarn sits between aran weight yarn and super bulky yarn in thickness. Some patterns written for these neighbouring yarn weights may be adaptable to bulky yarn. It is always recommended to make a gauge swatch first when attempting a substitution like this.

Bulky yarn is often referred to as chunky yarn, particularly in the UK and Europe. In the Craft Yarn Council system it corresponds to Category #5 (bulky yarn). Terminology can vary between manufacturers, so checking the recommended gauge is the best way to compare yarns.

Typically 6–11 stitches per 10 cm (4 in) for super bulky yarn.

Needles between 8–12 mm are most commonly used. Use the higher end of this range if you want a relaxed, soft fabric, and the smaller end if you want a tighter, more structured fabric.

Super bulky yarn is widely used for projects that benefit from very fast knitting and thick, warm fabrics. Many knitters choose this yarn weight for blankets, oversized scarves, hats, and quick projects. Because the yarn is very thick, projects made with super bulky yarn can often be completed quickly.

Super bulky yarn is often referred to as super chunky yarn, though terminology can vary between manufacturers. Checking the recommended gauge is the best way to compare yarns.

Super bulky yarn is thicker than bulky weight yarn and represents the heaviest commonly used yarn category. Some patterns written for bulky yarn may be adaptable to super bulky yarn. It is always recommended to make a gauge swatch first when attempting a substitution like this.

Super bulky yarn is often referred to as super chunky yarn. In the Craft Yarn Council system it corresponds to Category #6 (super bulky yarn). Because yarn thickness can vary between manufacturers, checking the recommended gauge is the most reliable way to compare yarns.