INTERNATIONAL RING SIZE CONVERSION
Use this chart to determine your finger and ring size in all of the world’s international ring sizing standards. The information presented here has been compiled from many sources in various countries to help you determine your local ring size compared to those from other countries. The standards included in this resource are from the US & Canada, United Kingdom & Australia, France & Russia, Germany, Japan and Switzerland.
With the continuing increase in consumers purchasing goods through world wide online shopping, there is a requirement to ensure that potentially expensive purchases like rings are done properly right from the start. This resource should help you with that.
| Inside
Diameter |
Inside
Circumference |
Sizes | |||||||
| MM | Inches | MM | Inches | British &
Australian |
US &
Canada |
French &
Russian |
German | Japanese | Swiss |
| 9.91 | 0.390 | 31.13 | 1.22 | – | 0000 | – | – | – | – |
| 10.72 | 0.442 | 33.68 | 1.39 | – | 00 | – | – | – | – |
| 11.53 | 0.454 | 36.22 | 1.43 | – | 0 | – | – | – | – |
| 11.95 | 0.474 | 37.54 | 1.49 | A | 1/2 | – | – | – | – |
| 12.18 | 0.482 | 38.26 | 1.51 | A 1/2 | 3/4 | – | – | – | – |
| 12.37 | 0.487 | 38.86 | 1.53 | B | 1 | – | – | 1 | – |
| 12.60 | 0.496 | 39.58 | 1.56 | B 1/2 | 1 1/4 | – | – | – | – |
| 12.78 | 0.503 | 40.15 | 1.58 | C | 1 1/2 | – | – | – | – |
| 13.00 | 0.512 | 40.84 | 1.61 | C 1/2 | 1 3/4 | – | – | – | – |
| 13.21 | 0.520 | 41.50 | 1.63 | D | 2 | 41 1/2 | 13 1/2 | 2 | 1 1/2 |
| 13.41 | 0.528 | 42.13 | 1.66 | D 1/2 | 2 1/4 | – | – | – | – |
| 13.61 | 0.536 | 42.76 | 1.68 | E | 2 1/2 | 42 3/4 | 13 3/4 | 3 | 2 3/4 |
| 13.83 | 0.544 | 43.45 | 1.71 | E 1/2 | 2 3/4 | – | – | – | – |
| 14.05 | 0.553 | 44.14 | 1.74 | F | 3 | 44 | 14 | 4 | 4 |
| 14.15 | 0.557 | 44.45 | 1.75 | F 1/2 | 3 1/8 | – | – | – | – |
| 14.25 | 0.561 | 44.77 | 1.76 | F 3/4 | 3 1/4 | – | – | – | – |
| 14.36 | 0.565 | 45.11 | 1.77 | G | 3 3/8 | 45 1/4 | – | 5 | 5 1/4 |
| 14.45 | 0.569 | 45.40 | 1.79 | G 1/4 | 3 1/2 | – | 14 1/2 | – | – |
| 14.56 | 0.573 | 45.74 | 1.80 | G 1/2 | 3 5/8 | – | – | 6 | – |
| 14.65 | 0.577 | 46.02 | 1.81 | H | 3 3/4 | 46 1/2 | – | – | 6 1/2 |
| 14.86 | 0.585 | 46.68 | 1.84 | H 1/2 | 4 | – | 15 | 7 | – |
| 15.04 | 0.592 | 47.25 | 1.86 | I | 4 1/4 | 47 3/4 | – | – | 7 3/4 |
| 15.27 | 0.601 | 47.97 | 1.89 | I 1/2 | 4 1/2 | – | 15 1/4 | 8 | – |
| 15.40 | 0.606 | 48.38 | 1.90 | J | 4 5/8 | 49 | 15 1/2 | – | 9 |
| 15.53 | 0.611 | 48.79 | 1.92 | J 1/4 | 4 3/4 | – | – | – | – |
| 15.70 | 0.618 | 49.32 | 1.94 | J 1/2 | 5 | – | 15 3/4 | 9 | – |
| 15.80 | 0.622 | 49.64 | 1.95 | K | 5 1/8 | 50 | – | – | 10 |
| 15.90 | 0.626 | 49.95 | 1.97 | K 1/4 | 5 1/4 | – | – | – | – |
| 16.00 | 0.630 | 50.27 | 1.98 | K 1/2 | 5 3/8 | – | – | 10 | – |
| 16.10 | 0.634 | 50.58 | 1.99 | L | 5 1/2 | 51 3/4 | 16 | – | 11 3/4 |
| 16.30 | 0.642 | 51.21 | 2.02 | L 1/4 | 5 3/4 | – | – | – | – |
| 16.41 | 0.646 | 51.55 | 2.03 | L 1/2 | 5 7/8 | – | – | – | – |
| 16.51 | 0.650 | 51.87 | 2.04 | M | 6 | 52 3/4 | 16 1/2 | 12 | 12 3/4 |
| 16.71 | 0.658 | 52.50 | 2.07 | M 1/2 | 6 1/4 | – | – | – | – |
| 16.92 | 0.666 | 53.16 | 2.09 | N | 6 1/2 | 54 | 17 | 13 | 14 |
| 17.13 | 0.674 | 53.82 | 2.12 | N 1/2 | 6 3/4 | – | – | – | – |
| 17.35 | 0.683 | 54.51 | 2.15 | O | 7 | 55 1/4 | 17 1/4 | 14 | 15 1/4 |
| 17.45 | 0.687 | 54.82 | 2.16 | O 1/2 | 7 1/4 | – | – | – | – |
| 17.75 | 0.699 | 55.76 | 2.20 | P | 7 1/2 | 56 1/2 | 17 3/4 | 15 | 16 1/2 |
| 17.97 | 0.707 | 56.45 | 2.22 | P 1/2 | 7 3/4 | – | – | – | – |
| 18.19 | 0.716 | 57.15 | 2.25 | Q | 8 | 57 3/4 | 18 | 16 | 17 3/4 |
| 18.35 | 0.722 | 57.65 | 2.27 | Q 1/2 | 8 1/4 | – | – | – | – |
| 18.53 | 0.729 | 58.21 | 2.29 | Q 3/4 | 8 1/2 | – | 18 1/2 | 17 | – |
| 18.61 | 0.733 | 58.47 | 2.30 | R | 8 5/8 | 59 | – | – | 19 |
| 18.69 | 0.736 | 58.72 | 2.31 | R 1/4 | 8 3/4 | – | – | – | – |
| 18.80 | 0.740 | 59.06 | 2.32 | R 1/2 | 8 7/8 | – | – | – | – |
| 18.89 | 0.748 | 59.34 | 2.35 | R 3/4 | 9 | – | 19 | 18 | – |
| 19.10 | 0.752 | 60.00 | 2.36 | S | 9 1/8 | 60 1/4 | – | – | 20 1/4 |
| 19.22 | 0.757 | 60.38 | 2.38 | S 1/4 | 9 1/4 | – | – | – | – |
| 19.31 | 0.760 | 60.66 | 2.39 | S 1/2 | 9 3/8 | – | – | – | – |
| 19.41 | 0.764 | 60.98 | 2.40 | S 3/4 | 9 1/2 | – | 19 1/2 | 19 | – |
| 19.51 | 0.768 | 61.29 | 2.41 | T | 9 5/8 | 61 1/2 | – | – | 21 1/2 |
| 19.62 | 0.772 | 61.64 | 2.43 | T 1/4 | 9 3/4 | – | – | – | – |
| 19.84 | 0.781 | 62.33 | 2.45 | T 1/2 | 10 | – | 20 | 20 | – |
| 20.02 | 0.788 | 62.89 | 2.48 | U | 10 1/4 | 62 3/4 | – | 21 | 22 3/4 |
| 20.20 | 0.797 | 63.46 | 2.50 | U 1/2 | 10 1/2 | – | 20 1/4 | 22 | – |
| 20.32 | 0.800 | 63.84 | 2.51 | V | 10 5/8 | 63 | – | – | 23 3/4 |
| 20.44 | 0.805 | 64.21 | 2.53 | V 1/4 | 10 3/4 | – | – | – | – |
| 20.68 | 0.814 | 64.97 | 2.56 | V 1/2 | 11 | – | 20 3/4 | 23 | – |
| 20.76 | 0.817 | 65.22 | 2.57 | W | 11 1/8 | 65 | – | – | 25 |
| 20.85 | 0.821 | 65.50 | 2.58 | W 1/4 | 11 1/4 | – | – | – | – |
| 20.94 | 0.824 | 65.78 | 2.59 | W 1/2 | 11 3/8 | – | – | – | – |
| 21.08 | 0.830 | 66.22 | 2.61 | W 3/4 | 11 1/2 | – | 21 | 24 | – |
| 21.18 | 0.834 | 66.54 | 2.62 | X | 11 5/8 | 66 1/4 | – | – | 26 1/4 |
| 21.24 | 0.836 | 66.73 | 2.63 | X 1/4 | 11 3/4 | – | – | – | – |
| 21.30 | 0.839 | 66.92 | 2.64 | X 1/2 | 11 7/8 | – | – | – | – |
| 21.49 | 0.846 | 67.51 | 2.66 | Y | 12 | 67 1/2 | 21 1/4 | 25 | 27 1/2 |
| 21.69 | 0.854 | 68.14 | 2.68 | Y 1/2 | 12 1/4 | – | – | – | – |
| 21.89 | 0.862 | 68.77 | 2.71 | Z | 12 1/2 | 68 3/4 | 21 3/4 | 26 | 28 3/4 |
| 22.10 | 0.870 | 69.43 | 2.73 | Z +1/2 | 12 3/4 | – | – | – | – |
| 22.33 | 0.879 | 70.15 | 2.76 | Z+1 | 13 | – | 22 | 27 | – |
| 22.60 | 0.890 | 71.00 | 2.80 | Z+1.5 | 13.5 | – | – | – | – |
| 22.69 | 0.893 | 71.28 | 2.81 | Z+2 | – | – | – | – | – |
| 22.92 | 0.902 | 72.00 | 2.83 | Z+2.5 | – | – | – | – | – |
| 23.06 | 0.908 | 72.45 | 2.85 | Z+3 | – | – | – | – | – |
| 23.24 | 0.915 | 73.01 | 2.87 | Z+3.5 | – | – | – | – | – |
| 23.47 | 0.924 | 73.73 | 2.90 | Z+4 | – | – | – | – | – |
| 23.55 | 0.927 | 73.98 | 2.91 | Z+4.5 | – | – | – | – | – |
| 23.87 | 0.940 | 74.99 | 2.95 | Z+5 | – | – | – | – | – |
| 24.27 | 0.956 | 76.25 | 3.00 | Z+6 | – | – | – | – | – |
Sizing Tool Download
This tool will help you determine both your finger size and ring size if you are not sure what it is. The Sizing Tool is available as a PDF download below. Please ensure that your print settings are at 100% when printing the tool page and that it is not being shrunk to fit on the page.
