Needle Size Conversion Guides
We all hate doing it, but remember to do a tension swatch when using any yarns, as we all knit/crochet differently, and any guides on yarns are only approximations. This could save hours of work and also disappointment.
Knitting Needle and Crochet Needle conversion guides below:
Knitting Needles:
Metric Size
mm |
UK / Canadian
Size |
US
Size |
2.0 | 14 | 0 |
2.25 | 13 | 1 |
2.75 | 12 | 2 |
3.0 | 11 | – |
3.25 | 10 | 3 |
3.5 | – | 4 |
3.75 | 9 | 5 |
4.0 | 8 | 6 |
4.5 | 7 | 7 |
5.0 | 6 | 8 |
5.5 | 5 | 9 |
6.0 | 4 | 10 |
6.5 | 3 | 10.5 |
7.0 | 2 | – |
7.5 | 1 | – |
8.0 | 0 | 11 |
9.0 | 00 | 13 |
10.0 | 000 | 15 |
12.0 | – | 17 |
16.0 | – | 19 |
19.0 | – | 35 |
25.0 | – | 50 |
Crochet Needles:
Metric Size mm |
UK / Canadian Size |
US Size |
2.0 | 14 | – |
2.25 | 13 | B/1 |
2.5 | 12 | – |
2.75 | – | C/2 |
3.0 | 11 | – |
3.25 | 10 | D/3 |
3.5 | 9 | E/4 |
3.75 | – | F/5 |
4.0 | 8 | G/6 |
4.5 | 7 | 7 |
5.0 | 6 | H/8 |
5.5 | 5 | I/9 |
6.0 | 4 | J/10 |
6.5 | 3 | K/10 1/2 |
7.0 | 2 | – |
8.0 | 0 | L/11 |
9.0 | 00 | M/13 |
10.0 | 000 | N/15 |