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International Ring Size Conversion Table

At Revolution Jewelry we work with customers from all over the world. To help ensure all our customers get the correct size for their ring, we offer rings sizers and have the chart below to help with any size conversions that may be necessary.

US & Canada UK & Australian French & Russian German Japanese Swiss
3 F - F 1/2 44 14 4 4
3.25 F 3/4 - G 45 - 5 5
3.5 G 1/4 - G 1/2 - 14 1/2 6 5.5
3.75 H - H 1/4 46 - - 6
4 H 1/2 - H 3/4 - 15 7 7
4.25 I - I 1/4 47 - - -
4.5 I 1/2 - J 48 - 8 8
4.75 J 1/4 49 15 1/2 - 9
5 J 1/2 - K - - 9 -
5.25 K 1/4 - K 1/2 50 - 10 10
5.5 K 3/4 - L 51 16 - 11
5.75 L 1/4 - L 1/2 - - 11 -
6 L 3/4 - M 1/4 52 16 1/2 12 12
6.25 M 1/2 - M 3/4 53 - - 13
6.5 N - N 1/4 - 17 13 14
6.75 N 1/2 - N 3/4 54 - - -
7 O - O 1/4 - - 14 -
7.25 O 1/2 - O 3/4 55 17 1/2 - 15
7.5 P - P 1/4 56 - 15 16
7.75 P 1/2 - P 3/4 - - - -
8 Q - Q 1/4 57 18 16 17
8.25 Q 1/2 58 - - 18
8.5 Q 3/4 - R - 18 1/2 17 -
8.75 R 1/4 - R 1/2 59 - - 19
9 R 3/4 - S - 19 18 -
9.25 S 1/4 - S 1/2 60 - - 20
9.5 S 3/4 - T 61 19 1/2 19 21
9.75 T 1/4 62 - - -
10 T 1/2 - T 3/4 - 20 20 22
10.25 U - U 1/4 63 - 21 23
10.5 U 1/2 - V - - 22 -
10.75 V 1/4 64 20 1/2 - 24
11 V 1/2 - W 65 - 23 -
11.25 W 1/4 - W 1/2 66 - - 25
11.5 W 3/4 - X - 21 24 26
11.75 X 1/4 - X 1/2 67 - - -
12 Y - Y 1/4 - 21 1/2 25 27
12.25 Y 1/2 - Y 3/4 68 - - 28
12.5 Z - Z 1/4 69 - 26 -
12.75 Z+1/2 - Z+3/4 - 22 - 29
13 Z+1 70 - 27 30
13.25 - - - - -
13.5
Z+1.5
71 22 1/2 - 31
13.75 Z+2 - - - 32
14 Z+3 72 23 - -
14.25 - 73 - - 33
14.5 Z+4 - 23 1/2 - -
14.75 - 74 - - 34
15 Z+5 75 24 - 35
15.5 Z+6 - 24 1/1 - 36
16 Z+7 - - - 37