2 · Fine

Sport weight yarn

Sport weight yarn belongs to 2 · Fine in the Craft Yarn Council system. Common label terms include sport, baby.

Knit gauge

23–26 stitches per 4 in (10 cm)

Crochet gauge

16–20 stitches per 4 in (10 cm)

Needle range

3.25–3.75 mm

Hook range

3.5–4.5 mm

Reading the label

Category name is only the first check.

Before substituting sport weight yarn, compare the pattern gauge, the label's suggested gauge, fiber content, ball weight, and length per ball. The meters-per-gram or yards-per-ounce figure can reveal density differences that a category number hides.

Swatch sequence

  1. 1. Work a swatch larger than the area you plan to measure.
  2. 2. Wash and dry it as the project will be treated.
  3. 3. Measure the center, away from edge stitches.
  4. 4. Adjust tool size or yarn choice before calculating materials.

Substitution check

Can you substitute another yarn?

Possibly, if the replacement makes the same fabric at the required gauge and has suitable fiber behavior. Match category, then compare length per ball and total yardage. Buy enough for the recalculated amount and allow a buffer based on the pattern designer's guidance.

Knitting gauge calculator Crochet gauge calculator Yarn yardage calculator

Source notes

Last reviewed September 1, 2026