| knitting needles |
| U.S. | METRIC |
| 0 | 2 mm |
| 1 | 2.25 mm |
| 2 | 2.75 mm |
| 3 | 3.25 mm |
| 4 | 3.5 mm |
| 5 | 3.75 mm |
| 6 | 4 mm |
| 7 | 4.5 mm |
| 8 | 5 mm |
| 9 | 5.5 mm |
| 10 | 6 mm |
| 10½ | 6.5 mm |
| 11 | 8 mm |
| 13 | 9 mm |
| 15 | 10 mm |
| 17 | 12.75 mm |
| 19 | 15 mm |
| 35 | 19 mm |
 | |
|
|
| crochet hooks |
| U.S. | METRIC |
| B/1 | 2.25 mm |
| C/2 | 2.75 mm |
| D/3 | 3.25 mm |
| E/4 | 3.5 mm |
| F/5 | 3.75 mm |
| F/5 | 3.75 mm |
| G/6 | 4 mm |
| 7 | 4.5 mm |
| H/8 | 5 mm |
| I/9 | 5.5 mm |
| J/10 | 6 mm |
| K/10½ | 6.5 mm |
| L/11 | 8 mm |
| M/13 | 9 mm |
| N/15 | 10 mm |
| |
|
