The official international ring size conversion chart
Welcome to the No. 1 source for determining 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.
Use the circles below to judge sizes against your existing rings. Make sure you line the circles up below with the inside of your band to get an idea of size.
For Accuracy please scale you printing size to 80%
Try this finger sizing tool to help determine your ring size. Cut a slit along the top line and wrap it around your finger pushing the pointed end through the slit and measuring the size there. Remember that the ring will need to be snug but will still need to fit over the largest part of your finger.
| 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 | – | – | – | – | – |