Yarn substitution: skein converter
Using a different yarn from the pattern? Enter both yarns' skein lengths and see how many skeins of yours to buy, with a check that they're a similar thickness.
Updated
Choosing a substitute
- Same weight category first: DK for DK, worsted for worsted. See the yarn weight chart.
- Similar length per 100 g, within about 10%, means a similar thickness.
- Similar fibre behaves alike: a wool sweater pattern worked in cotton will be heavier and less stretchy.
- Swatch and block before you commit, then use the gauge calculator to check.
Common questions
How do I substitute yarn in a pattern?
Work by length, not by weight or skein count. Multiply the pattern’s skeins by the length of each, then divide by the length of your yarn’s skeins and round up. Choose a yarn of the same weight category and similar thickness, and swatch to check your gauge.
Can I substitute by grams instead?
Only if both yarns have the same length per gram. Fibres differ a lot: 100 g of cotton is much shorter than 100 g of wool of the same thickness, so going by grams can leave you short.
What if my yarn is a different thickness?
Compare the length per 100 g on the two ball bands. If they differ by more than about 10–15%, the fabric and gauge will change: swatch, adjust the needle or hook, and expect to need a different amount.