Knitting needles sizes

I don’t know about you, but I’m always finding that I need to know what size a needle really is, and end up spending a bunch of time looking for a needle size conversion chart. Since I’m more familiar with the U.S. sizes, those are first in the list, followed by metric sizes, U.K./Canadian sizes, and ending with Japanese sizes. I also have a chart of crochet hook sizes, if you need to take a look at that, too.

U.S.

Metric

U.K./Canada

Japanese

0

1

1.5

2

2.5

3

4

5

6

7

8

9

10

10-1/2

11

13

15

17

19

35

50

2

2.1

2.25

2.4

2.5

2.7

2.75

3

3.25

3.3

3.5

3.6

3.75

3.9

4

4.2

4.5

4.8

5

5.1

5.4

5.5

5.7

6

6.3

6.5

6.6

7

7.5

8

9

10

12

16

19

25

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

00

000

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

7 mm

8 mm

9 mm

10 mm

Circular needles

Another thing people often want to know is what length circular needle they should use for a given project. The following chart shows the minimum number of stitches that will realistically fit on a given length needle.

Stitches/in
16-in/41-cm
24-in/61-cm
29-in/74-cm
36-in/91-cm

3

3.5

4

4.5

5

5.5

6

6.5

7

7.5

8

8.5

9

48

56

64

72

80

88

96

104

112

120

128

136

144

72

84

96

108

120

132

144

156

168

180

192

204

216

90

105

120

135

150

165

180

195

210

225

240

255

270

120

135

150

165

180

195

216

234

252

270

288

306

324