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To start, place a ring or similar object on the circle. Move the slider to get the ring size. If you use a smartphone, it's best to place it on a flat surface. The following table will show you the size in all regions.
For accurate ring size measurements, please calibrate using a credit card. Without calibration, sizes may not match real dimensions.
| Diameter (mm) | Circumference (mm) | EU/Poland | Germany | Australia / UK | Canada | Japan | Ukraine |
|---|---|---|---|---|---|---|---|
| 13.1 | 41.0 | 1 | 41 | D | 2 | — | — |
| 13.4 | 42.0 | 2 | 42 | D 1/2 | 2.25 | 2 | — |
| 13.5 | 42.4 | — | — | E | — | — | — |
| 13.7 | 43.0 | 3 | 43 | E 1/2 | 2.5 | 3 | — |
| 14.0 | 44.0 | 4 | 44 | F | 2.75 | 4 | 14 |
| 14.1 | 44.3 | — | — | F 1/2 | 3 | — | — |
| 14.3 | 45.0 | 5 | 45 | G | 3.25 | 5 | — |
| 14.5 | 45.6 | — | — | G 1/2 | 3.5 | — | — |
| 14.6 | 46.0 | 6 | 46 | H | 3.75 | 6 | — |
| 15.0 | 47.0 | 7 | 47 | H 1/2 | 4 | 7 | 15 |
| 15.1 | 47.4 | — | — | I | 4.25 | — | — |
| 15.3 | 48.0 | 8 | 48 | I 1/2 | 4.5 | 8 | — |
| 15.6 | 49.0 | 9 | 49 | J | 4.75 | — | — |
| 15.7 | 49.3 | — | — | J 1/2 | 5 | 9 | — |
| 15.9 | 50.0 | 10 | 50 | K | 5.25 | 10 | 16 |
| 16.2 | 51.0 | 11 | 51 | K 1/2 | 5.5 | — | — |
| 16.3 | 51.3 | — | — | L | 5.75 | 11 | — |
| 16.6 | 52.0 | 12 | 52 | L 1/2 | 6 | — | — |
| 16.7 | 52.5 | — | — | M | 6.25 | 12 | — |
| 16.9 | 53.0 | 13 | 53 | M 1/2 | 6.5 | 13 | 17 |
| 17.2 | 54.0 | 14 | 54 | N | 6.75 | — | — |
| 17.3 | 54.4 | — | — | N 1/2 | 7 | 14 | — |
| 17.6 | 55.2 | 15 | 55 | O | 7.25 | — | — |
| 17.7 | 55.6 | — | — | O 1/2 | 7.5 | 15 | — |
| 17.8 | 56.0 | 16 | 56 | P | 7.75 | 16 | 18 |
| 18.1 | 57.0 | 17 | 57 | P 1/2 | 8 | — | — |
| 18.3 | 57.6 | — | — | Q | 8.25 | 17 | — |
| 18.5 | 58.0 | 18 | 58 | Q 1/2 | 8.5 | 18 | — |
| 18.8 | 59.0 | 19 | 59 | R | 8.75 | — | — |
| 19.0 | 59.7 | — | — | R 1/2 | 9 | 19 | 19 |
| 19.1 | 60.0 | 20 | 60 | S | — | — | — |
| 19.3 | 60.7 | — | — | S 1/2 | 9.25 | 20 | — |
| 19.4 | 61.0 | 21 | 61 | T | 9.5 | — | — |
| 19.7 | 62.0 | 22 | 62 | T 1/2 | 9.75 | 21 | — |
| 19.8 | 62.3 | — | — | U | 10 | — | — |
| 20.1 | 63.0 | 23 | 63 | U 1/2 | 10.25 | 22 | 20 |
| 20.4 | 64.0 | 24 | 64 | V | 10.5 | 23 | — |
| 20.5 | 64.4 | — | — | V 1/2 | 10.75 | — | — |
| 20.7 | 65.0 | 25 | 65 | W | 11 | 24 | — |
| 21.0 | 66.0 | 26 | 66 | W 1/2 | 11.25 | 25 | 21 |
| 21.1 | 66.3 | — | — | X | 11.5 | — | — |
| 21.3 | 67.0 | 27 | 67 | X 1/2 | 11.75 | 26 | — |
| 21.5 | 67.5 | — | — | Y | 12 | — | — |
| 21.7 | 68.0 | 28 | 68 | Y 1/2 | 12.25 | 27 | — |
| 22.0 | 69.0 | 29 | 69 | Z | 12.5 | 28 | 22 |
| 22.1 | 69.5 | — | — | Z 1/2 | 12.75 | — | — |
| 22.3 | 70.0 | 30 | 70 | Z + 1 | 13 | 29 | — |
| 22.6 | 71.0 | 31 | 71 | Z + 1 1/2 | 13.25 | — | — |
| 22.7 | 71.3 | — | — | Z + 2 | 13.5 | 30 | — |
| 22.9 | 72.0 | 32 | 72 | Z + 2 1/2 | 13.75 | 31 | 23 |