Crochet Hook Conversion Chart
Do you sometimes get confused by all the different sizes of crochet hooks that seem to be out there? Us too! American sizes, Japanese sizes, Metric sizes, letters, symbols, it seems like every country invented its own system. That’s why we put together this conversion chart, so you know you have the right size for the job. You’ll notice that some of the cells are blank. That is because not all systems work with all types of hooks.
| Crochet Hook Conversion chart | |||
|---|---|---|---|
| Metric sizes | US sizes | Canadian/UK hook sizes | Japanese sizes |
| 2.00 mm | 4 | 14 | 2/0 |
| 2.25 mm | B/1 | 13 | 3/0 |
| 2.50 mm | – | – | 4/0 |
| 2.75 mm | C/2 | 12 | – |
| 3.0 mm | – | 11 | 5/0 |
| 3.25 mm | D/3 | 10 | – |
| 3.50 mm | E/4 | 9 | 6/0 |
| 3.75 mm | F/5 | – | |
| 4.00 mm | G/6 | 8 | 7/0 |
| 4.50 mm | 7 | 7 | 7.5/0 |
| 5.00 mm | H/8 | 6 | 8/0 |
| 5.50 mm | I/9 | 5 | – |
| 6.00 mm | J/10 | 4 | 10/0 |
| 6.50 mm | K/10.5 | 3 | 7 |
| 7.00 mm | 2 | – | |
| 7.5 mm | 1 | – | |
| 8.00 mm | L/11 | 0 | 8 |
| 9.00 mm | M/13 | 00 | 9 |
| 10.00 mm | N/15 | 000 | 10 |
| 12.00 mm | P/16 | – | |
| 15.00 mm | P/Q | – | |
| 16.00 mm | Q | – | |
| 19.00 mm | S | – | |