Yarn Weight Reference Chart
All 8 CYCA yarn weights with gauge, WPI, needle, hook sizes, common uses, and fiber care guide.
CYCA Yarn Weight Chart
| Weight Name | CYCA # | Common Names | WPI | Knit Gauge (4") | Crochet Gauge (4") | Needle (mm) | Hook (mm) | Common Uses |
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Fiber Content Reference
| Fiber | Characteristics | Pros | Cons | Care |
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How to Use This Reference
- Use the filter box above each table to search by any column value — weight name, fiber, CYCA number, etc.
- CYCA Numbers are the Craft Yarn Council of America's standardized weight system (0–7). CYCA 0 is the finest; CYCA 7 is the heaviest.
- WPI (Wraps Per Inch) lets you classify unlabeled yarn — wrap it around a ruler and count the wraps in one inch.
- Gauge ranges assume stockinette stitch for knitting and single crochet for crochet, over 4 inches with recommended needle/hook size.
About this Yarn Weight Reference
Use this free Yarn Weight Reference to get quick, accurate results directly in your browser. It is designed for everyday use with no signup, no downloads, and no account required. No signup is required, and the tool works on phones, tablets, and desktop browsers.