Yarn Weight Conversion
Identify yarn weight by wraps per inch and find needle recommendations.
Wraps Per Inch (WPI)
Wrap yarn around a ruler without gaps or overlaps, count wraps in 1 inch
Yarn Weight Chart
| Weight | WPI | St/in | Needles |
|---|---|---|---|
| Lace (0) | 30-40+ | 8-10 | US 000-1 |
| Fingering/Sock (1) | 19-22 | 7-8 | US 1-3 |
| Sport (2) | 15-18 | 5.5-6.5 | US 3-5 |
| DK/Light Worsted (3) | 12-14 | 5-5.5 | US 5-7 |
| Worsted/Aran (4) | 9-11 | 4-4.5 | US 7-9 |
| Bulky/Chunky (5) | 6-8 | 3-3.5 | US 9-11 |
| Super Bulky (6) | 4-5 | 1.5-2.5 | US 11-17 |
| Jumbo (7) | 1-3 | 1-1.5 | US 17+ |
How to Measure WPI
- Wrap yarn around a pencil or ruler
- Keep wraps snug but not stretched
- No gaps between wraps, no overlapping
- Count how many wraps fit in 1 inch
- Repeat 2-3 times and average for accuracy
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