Ring Size Guide

 

Ring size guide

United States/Canada Australia/UK Inside Diameter (mm)
3 F 14.1
3.25 F1/2 14.3
3.5 G 14.5
3.75 G1/2 14.7
4 H 14.9
4.25 H1/2 15.1
4.5 I 15.3
4.75 I1/2 15.5
5 J 15.7
5.25 J1/2 15.9
5.5 K 16.1
5.75 K1/2 16.3
6 L 16.5
6.25 L1/2 16.7
6.5 M 16.9
6.75 M1/2 17.1
7 N 17.3
7.25 N1/2 17.5
7.5 O 17.7
7.75 O1/2 17.9
8 P 18.1
8.25 P1/2 18.3
8.5 Q 18.5
8.75 Q1/2 18.8
9 R 19
9.25 R1/2 19.2
9.5 S 19.4
9.75 S1/2 19.6
10 T 19.8
10.25 T1/2 20
10.5 U 20.2
10.75 U1/2 20.4
11 V 20.6
11.25 V1/2 20.8
11.5 W 21
11.75 W1/2 21.2
12 X 21.4
12.25 X1/2 21.6
12.5 Y 21.8
12.75 Y1/2 22
13 Z 22.2
13.25 Z1/2 22.4

Ring size guide

United States/Canada Australia/UK Inside Diameter (mm)
3 F 14.1
3.25 F1/2 14.3
3.5 G 14.5
3.75 G1/2 14.7
4 H 14.9
4.25 H1/2 15.1
4.5 I 15.3
4.75 I1/2 15.5
5 J 15.7
5.25 J1/2 15.9
5.5 K 16.1
5.75 K1/2 16.3
6 L 16.5
6.25 L1/2 16.7
6.5 M 16.9
6.75 M1/2 17.1
7 N 17.3
7.25 N1/2 17.5
7.5 O 17.7
7.75 O1/2 17.9
8 P 18.1
8.25 P1/2 18.3
8.5 Q 18.5
8.75 Q1/2 18.8
9 R 19
9.25 R1/2 19.2
9.5 S 19.4
9.75 S1/2 19.6
10 T 19.8
10.25 T1/2 20
10.5 U 20.2
10.75 U1/2 20.4
11 V 20.6
11.25 V1/2 20.8
11.5 W 21
11.75 W1/2 21.2
12 X 21.4
12.25 X1/2 21.6
12.5 Y 21.8
12.75 Y1/2 22
13 Z 22.2
13.25 Z1/2 22.4
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