Knitting Needle Size Conversion

Metric (mm) UK US Japan
1.25 16 000
1.5 15 00
1.75
2 14 0 0
2.25 13 1
2.5 1
2.75 12 2 2
3 11 3
3.25 10 3 4
3.5 4 5
3.75 9 5 5
4 8 6 6
4.25 7
4.5 7 7 8
4.75 9
5 6 8 10
5.5 5 9 11
5.75 12
6 4 10 13
6.25 14
6.5 3 10 1/2 15
7 2 7
7.5 1
8 0 11 8
9 00 13 9
10 000 15 10
12 17
16 19
19 35
25 50