Continental
Metric Size (mm)

Knitting Needles

Crochet Hooks

Steel Crochet Hooks

American (US)

British (UK)

American (US) #

American (US) A

American (US)

British (UK)

.75

14

–

.85

13

7

1.0

12

6 1/2

1.1

11

6

1.3

10

5 1/2

1.4

9

5

1.5

8

4 1/2

1.65

7

4

1.75

00

15

–

–

1.8

6

3 1/2

1.9

5

3

2

0

14

A

4

2 1/2

2.1

3

2

2.25

1

13

1

B

2

1 1/2

2.5

–

–

–

–

2.75

2

12

2

C

1

1

3

–

11

–

–

3.25

3

10

3

D

0

0

3.5

4

–

4

E

00

–

3.75

5

9

5

F

4

–

8

4.25

6

–

6

G

4.5

7

7

7

7

5

8

6

8

H

5.25

–

–

5.5

9

5

9

I

5.75

–

–

6

10

4

10

J

6.5

10.5

3

10.5

K

7

–

2

7.5

–

1

8

11

0

11

L

9

13

00

13

M/N

10

15

000

15

N/P

12.75

17

15

19

P/Q

19

35

S

25

50