Knitting needles and crochet hooks conversion chart
Yarn labels typically include the recommended needle or hook size based on the type of fiber. This size refers to the thickness or diameter of the tool, not its length. Needles come in various lengths, and circular needles can have different cable sizes, making them suitable for a wide range of projects. There are also several sizing systems used to indicate thickness: in Europe, sizes are listed in millimeters; in the United States, sizes range from 0 to 50; and in the United Kingdom and Canada, the range goes from 18 to 000. To make it easier for you to pick the right knitting needles or crochet hooks, we've put together two helpful charts for your next project!
Knitting Needles
| Europe / mm | United States / US | United Kingdom and Canada / UK |
|---|---|---|
| 2 | 0 | 14 |
| 2.25 | 1 | 13 |
| 2.50 | - | - |
| 2.75 | 2 | 12 |
| 3 | - | 11 |
| 3.25 | 3 | 10 |
| 3.50 | 4 | - |
| 3.75 | 5 | 9 |
| 4 | 6 | 8 |
| 4.50 | 7 | 7 |
| 5 | 8 | 6 |
| 5.50 | 9 | 5 |
| 6 | 10 | 4 |
| 6.50 | 10 1/2 | 3 |
| 7 | - | 2 |
| 7.50 | - | 1 |
| 8 | 11 | 0 |
| 9 | 13 | 00 |
| 10 | 15 | 000 |
| 12 | 17 | - |
| 13 | 17 | - |
| 15 | 19 | - |
| 19 | 35 | - |
| 20 | - | - |
| 25 | - | - |
| 25 | 50 | - |
Crochet Hook Sizes
| Europe/mm | United States/US | United Kingdom and Canada |
|---|---|---|
| 0.50 | - | - |
| 0.60 | - | - |
| 0.65 | - | - |
| 0.70 | - | - |
| 0.75 | 14 | - |
| 0.80 | - | - |
| 0.85 | 13 | 7 |
| 0.90 | - | - |
| 1 | 12 | 6.5 |
| 1.10 | 11 | 6 |
| 1.25 | - | - |
| 1.30 | 10 | 5.5 |
| 1.40 | 9 | 5 |
| 1.50 | 8 | 4.5 |
| 1.60 | 7 | 4 |
| 1.75 | - | - |
| 1.80 | 6 | 3.5 |
| 1.90 | 5 | 3 |
| 2 | 4 | 2.5 |
| 2.10 | 3 | 2 |
| 2.20 | 2 | 1.5 |
| 2.55 | 1 | 1 |
| 3 | 0 | 0 |
| 2 | A/0 | 14 |
| 2.25 | B/1 | 13 |
| 2.50 | - | 12 |
| 2.75 | C/2 | - |
| 3 | - | 11 |
| 3.25 | D/3 | 10 |
| 3.50 | E/4 | 9 |
| 3.75 | F/5 | - |
| 4 | G/6 | 8 |
| 4.50 | 7 | 7 |
| 5 | H/8 | 6 |
| 5.50 | I/9 | 5 |
| 6 | J/10 | 4 |
| 6.50 | K/10 1/2 | 3 |
| 7 | - | 2 |
| 8 | L/11 | 0 |
| 9 | M/13 | - |
| 10 | N/15 | - |
| 12 | O/16 | - |
| 12.75 | 17 | - |
| 15 | P/19 | - |
| 16 | Q | - |
| 19 | S/35 | - |