Size 4

46.8 mm

1 13/16 Inches

Size 5

49.3 mm

1 15/16 Inches

Size 6

51.9 mm

2 1/16 Inches

Size 7

54.4 mm

2 1/8 Inches

Size 8

57.0 mm

2 1/4 Inches

Size 9

59.5 mm

2 5/16 Inches

Size 10

62.1 mm

2 7/16 Inches

Size 11

64.6 mm

2 9/16 Inches

Canada/USA

UK/Australia

Europe

(mm circumference)

Diameter (mm)

3

F

F ½

44.2

44.8

14.1

14.3

3 ½

G

45.5

14.5

G ½

46.1

14.7

4

H

46.8

14.9

H ½

47.4

15.1

4 ½

I

48.0

15.3

J

48.7

15.5

5

J ½

49.3

15.7

K

50.0

15.9

5 ½

K ½

50.6

16.1

L

51.2

16.3

6

L ½

51.9

16.5

M

52.5

16.7

6 ½

M ½

53.1

16.9

N

53.8

17.1

7

N ½

54.4

17.3

0

55.1

17.5

7 ½

0 ½

55.7

17.7

P

56.3

17.9

8

P ½

57.0

18.1

Q

57.6

18.3

8 ½

Q ½

58.3

18.5

R

58.9

18.8

9

R - ½

59.5

19.0

S

60.2

19.2

9 ½

S ½

60.8

19.4

T

61.4

19.6

10

T ½

62.1

19.8

U

62.7

20.0

10 ½

U ½

63.4

20.2

V

64.0

20.4

11

V ½

64.6

20.6

W

65.3

20.8

11 ½

W ½

65.9

21.0

X

66.6

21.2

12

X ½

67.2

21.4

Y

67.8

21.6

12 ½

Z

68.5

21.8

Z ½

69.1

22.0

13

69.7

22.2

Z + 1

70.4

22.4

13 ½

71.0

22.6