Ring Sizes

Ring Sizes

Choosing the correct ring size

To ensure a comfortable and safe fit, a ring must be the correct size for the wearer. This is achieved by using an established table of ring sizes from which the correct size is selected and then the ring is made or resized to that size.

Comparison Table of Ring Sizes

Our
Ring Size

Inside
Diameter
(mm)

Inside
Diameter
inches

A

12.065

0.4750

A 1/2

12.263

0.4828

B

12.459

0.4905

B 1/2

12.657

0.4983

C

12.852

0.5060

C 1/2

13.051

0.5138

D

13.246

0.5215

D 1/2

13.444

0.5293

E

13.640

0.5370

E 1/2

13.838

0.5448

F

14.034

0.5525

F 1/2

14.232

0.5603

G

14.427

0.5680

G 1/2

14.625

0.5758

H

14.821

0.5835

H 1/2

15.019

0.5913

I

15.215

0.5999

I 1/2

15.413

0.6068

J

15.608

0.6145

J 1/2

15.806

0.6223

K

16.002

0.6300

K 1/2

16.200

0.6378

L

16.396

0.6455

L 1/2

16.594

0.6533

M

16.789

0.6610

M 1/2

16.988

0.6688

Our
Ring Size

Inside
Diameter
(mm)

Inside
Diameter
inches

N

17.183

0.6765

N 1/2

17.381

0.6843

O

17.577

0.6920

O 1/2

17.775

0.6998

P

17.971

0.7075

P 1/2

18.169

0.7153

Q

18.364

0.7230

Q 1/2

18.562

0.7308

R

18.758

0.7385

R 1/2

18.956

0.7463

S

19.152

0.7540

S 1/2

19.350

0.7618

T

19.545

0.7695

T 1/2

19.741

0.7772

U

19.939

0.7850

U 1/2

20.137

0.7928

V

20.333

0.8005

V 1/2

20.531

0.8083

W

20.726

0.8160

W 1/2

20.925

0.8238

X

21.120

0.8315

X 1/2

21.318

0.8393

Y

21.514

0.8470

Y 1/2

21.712

0.8548

Z

21.908

0.8625

Z 1/2

22.106

0.8703