About Yarn Substitution
Whether you're knitting a sweater or crocheting a blanket, finding the perfect yarn can be tricky. Sometimes the pattern calls for a brand that's discontinued, too expensive, or simply not available in your area. That's where our Yarn Substitution Calculator comes in.
This tool helps you accurately calculate how many balls of a different yarn you need to complete your project. Unlike simple weight-based guesses, we use the total length (yardage/meterage) method, which is the gold standard for accuracy in the fiber arts community.
How to Use This Tool
- Step 1: Check your pattern for the "Original Yarn" requirements. Enter the number of balls called for, and the length/weight details from a single ball (usually found on the band).
- Step 2: Find a potential substitute yarn. Enter its length and weight details in the "New Yarn" section.
- Step 3: (Optional) Enter prices to see a cost comparison.
- Step 4: Click "Calculate". We'll tell you exactly how many balls to buy.
Tips for Successful Substitution
Match the Fiber: Try to replace wool with wool, or cotton with cotton. Different fibers drape differently. A silk shawl will behave very differently if made in stiff cotton.
Check the Gauge: Even if the yardage matches, the thickness (weight category) must be similar. Always knit or crochet a swatch before committing to a full garment.
Watch the Density: Our tool includes a unique "Project Weight Difference" feature. If your new yarn makes the project 30% heavier, a large sweater might stretch out of shape under its own weight.
Frequently Asked Questions
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