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Engagement Ring Size Chart & Conversions

Engagement ring size classifications are different in various parts of the world. The table below will give you some guidelines for the most commonly used measurements.

Printable Ring Sizing & Measuring Tool

image of the downloadable ring size chart

If you need to measure for ring size first, we offer a printable page (pdf) that includes various ring sizes so that you can place an existing ring on top of the illustrated sizes.

We also provide a ring sizing tool which you cut out and wrap around the finger to get your measurement. Just follow the instructions included on the page.

Get your Engagement Ring Size Kit  and download to print the file.

Ring Size Conversion Chart

amercan flag uk flag french flag swiss flag german flag japan flag Diameter (mm) Circum.
USA/Canada UK France Swiss Germany Japan    
3 F 44 4 14 4 14.0 -
3 1/2 G 45 1/4 5 1/3 14 1/2 5 1/2 14.4 -
4 H 1/2 46 1/2 6 1/2 15 7 14.8 46.5
4 1/2 I 1/2 47 3/4 8 15 1/4 8 15.2 48
5 J 1/2 49 9 1/2 15 3/4 9 15.6 49
5 1/2 L 50 3/4 10 3/4 16 10 1/2 16.0 50.5
6 M 51 1/2 12 3/4 16 1/2 12 16.5 52
6 1/2 N 52 3/4 14 17 13 16.9 53
7 O 54 15 1/4 17 1/4 14 17.3 54.5
7 1/2 P 55 1/4 16 1/2 17 3/4 15 17.7 55.5
8 Q 56 3/4 17 3/4 18 16 18.2 57
8 1/2 Q 1/2 58 18 1/2 18 1/2 17 18.6 58
9 R 1/2 59 1/4 20 19 18 19.0 59.5
9 1/2 S 1/2 60 3/4 21 19 1/2 19 19.4 61
10 T 1/2 61 3/4 21 3/4 20 20 19.8 62
10 1/2 U 1/2 62 3/4 22 3/4 20 1/4 22 20.2 63.5
11 V 1/2 64 1/4 24 20 3/4 23 20.6 64.5
11 1/2 W 1/2 66 25 3/4 21 24 21.0 66
12 Y 67 1/4 27 1/2 21 1/4 25 21.4 67.5
12 1/2 Z 68 28 3/4 21 3/4 26 21.8 68.5
13 Z + 1 69 29 1/4 22 27 22.2 70
13 1/2 Z + 2 - - - - 22.6 71
14 Z + 3 - - - - - 72.5
14 1/2 Z + 4 - - - - - 74
15 Z + 5 - - - - - 75

Check out all our helpful tips on
wedding and engagement rings including what kind of ring to get, where to learn about the 4Cs, buying advice and the traps to look for, saving money, and more.

We hope you found our ring size conversion chart helpful.

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