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Ring Size Guide

Find Your ring size

Jewelers follow a standard set of ring sizes! Measure at any jeweler or Walmart and enter the size on any rings page. Or, use one of the three options below to find your size!


Request a free sizer

» Questions on how to use the ring sizer? Check out our how-to video here


Measure your size with an existing ring!


Calculate your size without a ring

Use string to measure circumference of your ring finger. Have a friend mark where the string forms full circle, and measure that distance against a ruler, and plug into the calculator below.

Find Your ring size
We recommend measuring to the nearest millimeter to obtain the most accurate result.
Equals


Measurement tips


Size chart

Diameter (inches) Diameter (mm) US/Canada Standard British, Irish, Australian, Equivalent Japanese Equivalent Swiss
Equivalent
0.458 11.6 0
0.466 11.8 0.25
0.474 12 0.50 A
0.482 12.2 0.75 A 1/2
0.49 12.4 1 B 1
0.498 12.6 1.25 B 1/2
0.506 12.9 1 1/2 C
0.514 13.1 1 3/4 C 1/2
0.522 13.3 2 D 2 1.5
0.53 13.5 2 1/4 D 1/2
0.538 13.7 2 1/2 E 3 2.75
0.546 13.9 2 3/4 E 1/2
0.554 14.1 3 F 4 4
0.562 14.3 3 1/4 F 1/2 5 5.25
0.57 14.5 3 1/2 G
0.578 14.7 3 3/4 G 1/2 6 6.5
0.586 14.9 4 H 7
0.594 15.1 4 1/4 H 1/2 7.75
0.602 15.3 4 1/2 I 8
0.61 15.5 4 3/4 J 9
0.618 15.7 5 J 1/2 9
0.626 15.9 5 1/4 K 10
0.634 16.1 5 1/2 K 1/2 10
0.642 16.3 5 3/4 L 11.75
0.65 16.5 6 L 1/2 11 12.75
0.658 16.7 6 1/4 M 12
0.666 16.9 6 1/2 M 1/2 13 14
0.674 17.1 6 3/4 N
0.682 17.3 7 N 1/2 14 15.25
0.69 17.5 7 1/4 O
0.698 17.7 7 1/2 O 1/2 15 16.5
0.706 17.9 7 3/4 P
0.714 18.1 8 P 1/2 16 17.75
0.722 18.3 8 1/4 Q
0.73 18.5 8 1/2 Q 1/2 17
0.738 18.7 8 3/4 R 19
0.746 18.9 9 R 1/2 18
0.754 19.2 9 1/4 S 20.25
0.762 19.4 9 1/2 S 1/2 19
0.77 19.6 9 3/4 T 21.5
0.778 19.8 10 T 1/2 20
0.786 20 10 1/4 U 21
0.794 20.2 10 1/2 U 1/2 22 22.75
0.802 20.4 10 3/4 V
0.81 20.6 11 V 1/2 23
0.818 20.8 11 1/4 W 25
0.826 21 11 1/2 W 1/2 24
0.834 21.2 11 3/4 X
0.842 21.4 12 X 1/2 25 27.5
0.85 21.6 12 1/4 Y
0.858 21.8 12 1/2 Z 26 28.75
0.866 22 12 3/4 Z 1/2
0.874 22.2 13 27
0.882 22.4 13 1/4 Z1
0.89 22.6 13 1/2
0.898 22.8 13 3/4 Z2
0.906 23 14 Z3
0.914 23.2 14 1/4
0.922 23.4 14 1/2 Z4
0.93 23.6 14 3/4
0.938 23.8 15
0.946 24 15 1/4
0.954 24.2 15 1/2
0.962 24.4 15 3/4
0.97 24.6 16