Yarn Substitute Calculator

How to succeed with yarn substitution

Finding the perfect alternative to the yarn in the pattern can be a bit of a science. Many knitters want to switch yarn either for economic reasons, allergies (like wool allergy), or simply because they've found a color they like better in another quality.

The importance of fiber content

Even if the yardage is the same, different fibers will behave differently. Wool is elastic and holds its shape well, while cotton and linen are heavier and may stretch more. When switching yarn, you should consider if the alternative yarn has similar properties to the original. Read more about different fibers in our Fiber Lexicon.

Meters vs. Grams – Why the calculator is important

Many make the mistake of buying the same number of grams of the new yarn as the pattern prescribes. But if the original yarn has 150 meters per 50 grams, and your new yarn has 120 meters per 50 grams, you will end up with too little yarn.

Our yarn substitute calculator accounts for these differences by converting to total meters. This ensures that you always have enough thread to complete the project, regardless of the yarn's density or weight.

Checklist for yarn substitution

• Check gauge: The new yarn should have approximately the same suggested gauge as the original.
• Consider texture: A smooth yarn will give a different look than a fuzzy yarn.
• Calculate generously: It's always better to have one skein too many than one too few. Many shops allow you to return unopened skeins.