Yarn Weights Explained – A Complete Guide to Yarn Thickness

Yarn weights and international terms such as Lace, Fingering, DK, and Worsted can feel confusing at first — but there’s no need to memorize everything. With the right guidance, choosing the correct yarn becomes much easier.

Yarn weight refers to how many meters (or yards) of yarn there are per 100 grams. In general, the fewer meters per 100 grams, the thicker the yarn. However, the final result of your knit also depends on fiber content, structure, twist, and—most importantly—the gauge recommended in your pattern.

Here’s a quick overview of the most common yarn weights:

• Lace: Very fine yarn (600–1000 m / 100 g), often held double or combined with another yarn.
• Light Fingering: 450–600 m / 100 g, typically 24–28 sts per 10 cm.
• Fingering: 360–450 m / 100 g, usually 26–28 sts per 10 cm.
• Sport: 270–360 m / 100 g, approx. 24–28 sts per 10 cm.
• DK: 220–270 m / 100 g, typically 20–22 sts per 10 cm.
• Worsted: 200–240 m / 100 g, around 18–20 sts per 10 cm.
• Aran: 160–200 m / 100 g, approx. 16–18 sts per 10 cm.

Understanding yarn weights helps you substitute yarn confidently and achieve the correct fit and texture in your knitting projects. Always compare meterage and gauge to ensure the best result.