Crochet hook size chart
Hook sizes are printed in millimeters on most hooks today. Older patterns use US letters or old UK numbers; Japanese hooks use their own numbers. The millimeter size is the one to trust.
| mm | US | UK (old) | Japan |
|---|---|---|---|
| 2.0 mm | – | 14 | 2/0 |
| 2.25 mm | B-1 | 13 | – |
| 2.5 mm | – | 12 | 4/0 |
| 2.75 mm | C-2 | – | – |
| 3.0 mm | – | 11 | 5/0 |
| 3.25 mm | D-3 | 10 | – |
| 3.5 mm | E-4 | 9 | 6/0 |
| 3.75 mm | F-5 | – | – |
| 4.0 mm | G-6 | 8 | 7/0 |
| 4.5 mm | 7 | 7 | 7.5/0 |
| 5.0 mm | H-8 | 6 | 8/0 |
| 5.5 mm | I-9 | 5 | 9/0 |
| 6.0 mm | J-10 | 4 | 10/0 |
| 6.5 mm | K-10½ | 3 | – |
| 7.0 mm | – | 2 | 7 mm |
| 8.0 mm | L-11 | 0 | 8 mm |
| 9.0 mm | M/N-13 | 00 | – |
| 10.0 mm | N/P-15 | 000 | 10 mm |
| 11.5 mm | P-16 | – | – |
| 15.0 mm | P/Q | – | – |
| 16.0 mm | Q | – | – |
| 19.0 mm | S | – | – |
Count rows next to your pattern
Purlie: row counter, your own PDF patterns with a highlighter, stitch guides and these tools in one app. No ads.