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Needle & Hook Size Converter
Knitting & Crochet
| Metric (mm) | US | UK (old) | Japanese | Yarn Weight |
|---|---|---|---|---|
| 2 mm | US 0 | 14 | JP 0 | Lace |
| 2.25 mm | US 1 | 13 | – | Lace / Fingering |
| 2.5 mm | US 1.5 | – | JP 1 | Fingering |
| 2.75 mm | US 2 | 12 | JP 2 | Fingering |
| 3 mm | US 2.5 | 11 | JP 3 | Fingering / Sport |
| 3.25 mm | US 3 | 10 | JP 4 | Sport / DK |
| 3.5 mm | US 4 | – | JP 5 | DK |
| 3.75 mm | US 5 | 9 | – | DK |
| 4 mm | US 6 | 8 | JP 6 | DK / Worsted |
| 4.5 mm | US 7 | 7 | JP 7 | Worsted |
| 5 mm | US 8 | 6 | JP 8 | Worsted / Aran |
| 5.5 mm | US 9 | 5 | JP 9 | Aran |
| 6 mm | US 10 | 4 | JP 10 | Aran / Bulky |
| 6.5 mm | US 10.5 | 3 | JP 11 | Bulky |
| 7 mm | – | 2 | JP 12 | Bulky |
| 7.5 mm | – | 1 | JP 13 | Bulky |
| 8 mm | US 11 | 0 | JP 14 | Bulky / Super Bulky |
| 9 mm | US 13 | 00 | JP 15 | Super Bulky |
| 10 mm | US 15 | 000 | – | Super Bulky |
| 12 mm | US 17 | – | – | Jumbo |
| 15 mm | US 19 | – | – | Jumbo |
| 19 mm | US 35 | – | – | Jumbo |
| 25 mm | US 50 | – | – | Jumbo |