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Ring Sizing Guide

Hot and cold weather, time of day, weight, diet and many other factors tend to have a significant effect on an individual's ring size. Therefore, the most reliable technique to determine your ring size is to wear it for a couple of months under different conditions.  Everyone has different shaped fingers and knuckles. A well fitting ring should sit comfortably on the finger, and have some resistance when being pulled off. If you have no idea what your ring size is, the best way is to visit at least one reputable jeweler.  Titan Trade Jewelry does not recommend using paper or string method to determine ring size, as these methods are not accurate. 
 

American/Canadian Sizing
Titan Trade Jewelry uses American/Canadian sizing measures ring sizes from the bottom line of the ring where it lands on the ring mandrel.  As most of our rings are wide (6 - 8mm), please ensure you use a wide ring gauge when getting your finger sized. If you are using a narrow ring gauge then compensate by going at least a 1/2 size bigger to accommodate the wider ring.
Please be advised that European or International methods of sizing do not correspond exactly to North American sizing.  The most accurate way for European or International customers to determine their ring size is by using the inside diameter method.  The sizing ring used for measuring should be the same width as the ring being ordered.  The conversion table below shows the corresponding American/Canadian sizes from European or International sizes.

US/Canada
Ring sizes

Inner
Diameter

Inner
Diameter

Inner
Circumference

Inner
Circumference

British,
Irish,
Australian

sizes

Japanese
sizes

Swiss
sizes

Standard

(inches)

(mm)

(inches)

(mm)

Equivalent

Equivalent

Equivalent

0

0.458

11.6

1.438

36.5

 

 

 

1/4

0.466

11.8

1.463

37.2

 

 

 

1/2

0.474

12.0

1.488

37.8

A

 

 

3/4

0.482

12.2

1.513

38.4

A 1/2

 

 

1

0.490

12.4

1.539

39.1

B

1

 

1 1/4

0.498

12.6

1.564

39.7

B 1/2

 

 

1 1/2

0.506

12.9

1.589

40.4

C

 

 

1 3/4

0.514

13.1

1.614

41.0

C 1/2

 

 

2

0.522

13.3

1.639

41.6

D

2

1.50

2 1/4

0.530

13.5

1.664

42.3

D 1/2

 

 

2 1/2

0.538

13.7

1.689

42.9

E

3

2.75

2 3/4

0.546

13.9

1.714

43.5

E 1/2

 

 

3

0.554

14.1

1.740

44.2

F

4

4.00

3 1/4

0.562

14.3

1.765

44.8

F 1/2

5

5.25

3 1/2

0.570

14.5

1.790

45.5

G

 

 

3 3/4

0.578

14.7

1.815

46.1

G 1/2

6

6.50

4

0.586

14.9

1.840

46.7

H

7

 

4 1/4

0.594

15.1

1.865

47.4

H 1/2

 

7.75

4 1/2

0.602

15.3

1.890

48.0

I

8

 

4 3/4

0.610

15.5

1.915

48.7

J

 

9.00

5

0.618

15.7

1.941

49.3

J 1/2

9

 

5 1/4

0.626

15.9

1.966

49.9

K

 

10.00

5 1/2

0.634

16.1

1.991

50.6

K 1/2

10

 

5 3/4

0.642

16.3

2.016

51.2

L

 

11.75

6

0.650

16.5

2.041

51.8

L 1/2

11

12.75

6 1/4

0.658

16.7

2.066

52.5

M

12

 

6 1/2

0.666

16.9

2.091

53.1

M 1/2

13

14.00

6 3/4

0.674

17.1

2.116

53.8

N

 

 

7

0.682

17.3

2.141

54.4

N 1/2

14

15.25

7 1/4

0.690

17.5

2.167

55.0

O

 

 

7 1/2

0.698

17.7

2.192

55.7

O 1/2

15

16.50

7 3/4

0.706

17.9

2.217

56.3

P

 

 

8

0.714

18.1

2.242

56.9

P 1/2

16

17.75

8 1/4

0.722

18.3

2.267

57.6

Q

 

 

8 1/2

0.730

18.5

2.292

58.2

Q 1/2

17

 

8 3/4

0.738

18.7

2.317

58.9

R

 

19

9

0.746

18.9

2.342

59.5

R 1/2

18

 

9 1/4

0.754

19.2

2.368

60.1

S

 

20.25

9 1/2

0.762

19.4

2.393

60.8

S 1/2

19

 

9 3/4

0.770

19.6

2.418

61.4

T

 

21.5

10

0.778

19.8

2.443

62.1

T 1/2

20

 

10 1/4

0.786

20.0

2.468

62.7

U

21

 

10 1/2

0.794

20.2

2.493

63.3

U 1/2

22

22.75

10 3/4

0.802

20.4

2.518

64.0

V

 

 

11

0.810

20.6

2.543

64.6

V 1/2

23

 

11 1/4

0.818

20.8

2.569

65.2

W

 

25

11 1/2

0.826

21.0

2.594

65.9

W 1/2

24

 

11 3/4

0.834

21.2

2.619

66.5

X

 

 

12

0.842

21.4

2.644

67.2

X 1/2

25

27.50

12 1/4

0.850

21.6

2.669

67.8

Y

 

 

12 1/2

0.858

21.8

2.694

68.4

Z

26

28.75

12 3/4

0.866

22.0

2.719

69.1

Z 1/2

 

 

13

0.874

22.2

2.744

69.7

 

27

 

13 1/4

0.882

22.4

2.769

70.3

Z1

 

 

13 1/2

0.890

22.6

2.795

71.0

 

 

 

13 3/4

0.898

22.8

2.820

71.6

Z2

 

 

14

0.906

23.0

2.845

72.3

Z3

 

 

14 1/4

0.914

23.2

2.870

72.9

 

 

 

14 1/2

0.922

23.4

2.895

73.5

Z4

 

 

14 3/4

0.930

23.6

2.920

74.2

 

 

 

15

0.938

23.8

2.945

74.8

 

 

 

15 1/4

0.946

24.0

2.970

75.4

 

 

 

15 1/2

0.954

24.2

2.996

76.1

 

 

 

15 3/4

0.962

24.4

3.021

76.7

 

 

 

16

0.970

24.6

3.046

77.4