Crochet Hook Size Conversion ChartThe standard thicknesses
(sizes) of crochet hooks are different for the Japan (JP), US, and
UK regions. Please also note that the notations for each crochet
hook size are also different.First determine the size in
millimeters (mm) for the hook specified, then choose the closest
hook size that is most comfortable to use.
JP US UK
2.00 mm
2.25 mm
2.30 mm
2.50 mm
2.75 mm
3.00 mm
3.25 mm
3.50 mm
3.75 mm
4.00 mm
4.25 mm
4.50 mm
5.00 mm
5.50 mm
6.00 mm
6.50 mm
7.00 mm
8.00 mm
9.00 mm
10.00 mm
12.00 mm
15.00 mm
16.00 mm
17.50 mm19.00 mm
2/0 — 14
— B/1 13
3/0 — —
4/0 — 12
— C/2 —
5/0 — 11
— D/3 10
6/0 E/4 9— F/5 —
7/0 G/6 8
— — —
7.5/0 7 7
8/0 H/8 6
— I/9 5
10/0 J/10 4
— K/10.5 3
7 mm — 2
8 mm L/11 0— M/13 00
10 mm N/15 000
12 mm O/16 —
— P/19 —
— Q —
— R —
— S/35 —
JP US UK
2.00 mm
2.10 mm
2.25 mm
2.40 mm
2.50 mm
2.70 mm
2.75 mm
3.00 mm
3.25 mm
3.30 mm
3.50 mm
3.60 mm
3.75 mm
3.90 mm
4.00 mm
4.20 mm
4.25 mm
4.50 mm
4.80 mm
5.00 mm
5.10 mm
5.40 mm
5.50 mm
5.70 mm6.00 mm
6.30 mm
6.50 mm
6.60 mm
7.00 mm
7.50 mm
8.00 mm
9.00 mm
10.00 mm
12.00 mm
12.75 mm
15.00 mm
19.00 mm25.00 mm
— 0 14
0 — —
— 1 13
1 — —
— — —
2 — —
— 2 12
3 — 11— 3 10
4 — —
— 4 —
5 — —
— 5 9
6 — —
— 6 8
7 — —
— — —
8 7 79 — —
— 8 6
10 — —
11 — —
— 9 5
12 — —
13 10 4
14 — —— 10.5 3
15 — —7 mm — 2
— — 1
8 mm 11 0
— 13 00
10 mm 15 000
12 mm — —
— 17 —
— 19 —
— 35 —
— 50 —
Knitting Needle Size Conversion ChartThe standard thicknesses
(sizes) of knitting needles are different for the Japan (JP), US,
and UK regions. First determine the size in millimeters (mm) for
the needle specified, then choose the closest needle size that is
most comfortable to use.
