Ring Size Conversion
| Inner Diameter in mm |
Germany / Circumference in mm | USA / Canada | UK / Australia | France | Japan |
|---|---|---|---|---|---|
| 14,3 | 45 | 3.4(3) | G | 5 | 5 |
| 14,6 | 46 | 3.7(3-) | G 1/2 | 6 | 5,9 |
| 15 | 47 | 4.1(4) | H 1/2 | 7 | 6,9 |
| 15,3 | 48 | 4.5(4-) | I 1/2 | 8 | 7,8 |
| 15,6 | 49 | 4.9(4-) | J | 9 | 8,8 |
| 15,9 | 50 | 5.3(5) | K | 10 | 9,7 |
| 16,2 | 51 | 5.7(5-) | K 1/2 | 11 | 10,7 |
| 16,6 | 52 | 6.1(6) | L 1/2 | 12 | 11,6 |
| 16,9 | 53 | 6.4(6) | M 1/2 | 13 | 12,6 |
| 17,2 | 54 | 6.8(6-) | N | 14 | 13,6 |
| 17,5 | 55 | 7.2(7) | O | 15 | 14,5 |
| 17,8 | 56 | 7.6(7-) | P | 16 | 15,5 |
| 18,1 | 57 | 8.0 | P 1/2 | 17 | 16,4 |
| 18,5 | 58 | 8.4(8) | Q 1/2 | 18 | 17,4 |
| 18,8 | 59 | 8.7(8-) | R | 19 | 18,3 |
| 19,1 | 60 | 9.1(9) | S | 20 | 19,3 |
| 19,4 | 61 | 9.5(9-) | T | 21 | 20,2 |
| 19,7 | 62 | 9.9(9-) | T 1/2 | 22 | 21,2 |
| 20,1 | 63 | 10.3(10) | U 1/2 | 23 | 22,2 |
| 20,4 | 64 | 10.7(10-) | V | 24 | 23,1 |
| 20,7 | 65 | 11.0 | W | 25 | 24,1 |
Our chart on international ring size conversion helps you to select the right size for your new piece of jewelry by RADIAN.
All our 3D printed rings can be ordered in either German or US sizes and ship worldwide.
Whether you need a conversion from US ring sizes to German sizes or a conversion from UK ring sizes to US sizes, you will find all necessary information on this page. You can also easily spot the corresponding sizes for Canada, Australia, France and Japan.
How to find out your ring size
Additionally, we have added the inner diameter in millimeters for all ring sizes to our table. This is useful if you do not know your ring size at all and want to figure it out. You can take the inner diameter of one of your rings and use our chart to find the ring size that fits you and convert it into all common ring sizes.
If you still have any questions concerning finding out a ring size or if you would like to oder a ring in a custom size or a custom design, we are here to help you. Working with 3D printing as production method makes it possible to produce rings in all custom sizes.
Everyone deserves a beautiful piece of jewelry!
You can also download our ring size conversion chart and print it out.
And – if you are still unsure about your ring size, you can always go to a jewelry store and find assistance in finding it out or converting it.
But afterwards, come back here! :)
Your team RADIAN