Yarn Weight Converter
Substitute one yarn weight for another in your pattern.
Project Yardage Calculator
Calculate how much yarn you need for your project.
Yarn Weight Guide
Standard yarn weights and their recommended gauges.
| Weight | Gauge (4 inches) | Needle (mm) | Needle (US) | Common Uses |
|---|
Understanding Yarn Weight
Yarn weight refers to the thickness of the yarn strand, not the weight of the ball. The Craft Yarn Council standardizes these categories to help patterns be consistent. Always check your gauge!
How to Use This Tool
For Substituting Yarn
Select the yarn weight your pattern calls for, then choose the weight you want to use. The calculator will adjust the yardage needed and suggest needle changes.
For Calculating Yardage
Enter the yardage from your pattern and adjust for your size and gauge. The calculator recommends buying extra yarn for swatching and safety.
Reading Yarn Labels
Yarn labels show weight category, yardage, recommended needle size, and gauge. Use this guide to understand what those numbers mean.