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Find Your Ring Size
Find Your Ring Size
Find Your Ring Size
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Ring Size Conversion Chart
International Ring Sizes
All 25karats rings are manufactured in US standard ring size. Ring sizes vary by country. If you already know your ring size and just need to convert it to another scale, see our international ring size conversion chart below.
Find Your Ring Size
International Ring Size Conversion Chart
|
Inside Diameter
Inches
|
Inside Diameter
mm
|
Inside Circumference
Inches
|
Inside Circumference
mm
|
🇺🇸 🇨🇦
USA & Canada
|
🇬🇧 🇮🇪 🇦🇺 🇳🇿
UK & Commonwealth
|
🇪🇺
European
|
|---|---|---|---|---|---|---|
| 0.458 | 11.6 | 1.438 | 36.5 | — | — | — |
| 0.466 | 11.8 | 1.463 | 37.2 | — | — | — |
| 0.474 | 12 | 1.488 | 37.8 | — | A | — |
| 0.482 | 12.2 | 1.513 | 38.4 | — | A ½ | — |
| 0.49 | 12.4 | 1.539 | 39.1 | 1 | B | — |
| 0.498 | 12.6 | 1.564 | 39.7 | 1¼ | B½ | — |
| 0.506 | 12.9 | 1.589 | 40.4 | 1½ | C | — |
| 0.514 | 13.1 | 1.614 | 41 | 1¾ | C½ | — |
| 0.522 | 13.3 | 1.639 | 41.6 | 2 | D | 1.5 |
| 0.53 | 13.5 | 1.664 | 42.3 | 2¼ | D½ | — |
| 0.538 | 13.7 | 1.689 | 42.9 | 2½ | E | 2.75 |
| 0.546 | 13.9 | 1.714 | 43.5 | 2¾ | E½ | — |
| 0.554 | 14.1 | 1.74 | 44.2 | 3 | F | 4 |
| 0.562 | 14.3 | 1.765 | 44.8 | 3¼ | F½ | 5.25 |
| 0.57 | 14.5 | 1.79 | 45.5 | 3½ | G | — |
| 0.578 | 14.7 | 1.815 | 46.1 | 3¾ | G½ | 6.5 |
| 0.586 | 14.9 | 1.84 | 46.7 | 4 | H | — |
| 0.594 | 15.1 | 1.865 | 47.4 | 4¼ | H½ | 7.75 |
| 0.602 | 15.3 | 1.89 | 48 | 4½ | I | — |
| 0.61 | 15.5 | 1.915 | 48.7 | 4¾ | J | 9 |
| 0.618 | 15.7 | 1.941 | 49.3 | 5 | J½ | — |
| 0.626 | 15.9 | 1.966 | 49.9 | 5¼ | K | 10 |
| 0.634 | 16.1 | 1.991 | 50.6 | 5½ | K½ | — |
| 0.642 | 16.3 | 2.016 | 51.2 | 5¾ | L | 11.75 |
| 0.65 | 16.5 | 2.041 | 51.8 | 6 | L½ | 12.75 |
| 0.658 | 16.7 | 2.066 | 52.5 | 6¼ | M | 12.75 |
| 0.666 | 16.9 | 2.091 | 53.1 | 6½ | M½ | 14 |
| 0.674 | 17.1 | 2.116 | 53.8 | 6¾ | N | — |
| 0.682 | 17.3 | 2.141 | 54.4 | 7 | N½ | 15.25 |
| 0.69 | 17.5 | 2.167 | 55 | 7¼ | O | — |
| 0.698 | 17.7 | 2.192 | 55.7 | 7½ | O½ | 16.5 |
| 0.706 | 17.9 | 2.217 | 56.3 | 7¾ | P | — |
| 0.714 | 18.1 | 2.242 | 56.9 | 8 | P½ | 17.75 |
| 0.722 | 18.3 | 2.267 | 57.6 | 8¼ | Q | — |
| 0.73 | 18.5 | 2.292 | 58.2 | 8½ | Q½ | — |
| 0.738 | 18.7 | 2.317 | 58.9 | 8¾ | R | 19 |
| 0.746 | 18.9 | 2.342 | 59.5 | 9 | R½ | — |
| 0.754 | 19.2 | 2.368 | 60.1 | 9¼ | S | 20.25 |
| 0.762 | 19.4 | 2.393 | 60.8 | 9½ | S½ | — |
| 0.77 | 19.6 | 2.418 | 61.4 | 9¾ | T | 21.5 |
| 0.778 | 19.8 | 2.443 | 62.1 | 10 | T½ | — |
| 0.786 | 20 | 2.468 | 62.7 | 10¼ | U | — |
| 0.794 | 20.2 | 2.493 | 63.3 | 10½ | U½ | 22.75 |
| 0.802 | 20.4 | 2.518 | 64 | 10¾ | V | — |
| 0.81 | 20.6 | 2.543 | 64.6 | 11 | V½ | — |
| 0.818 | 20.8 | 2.569 | 65.2 | 11¼ | W | 25 |
| 0.826 | 21 | 2.594 | 65.9 | 11½ | W½ | — |
| 0.834 | 21.2 | 2.619 | 66.5 | 11¾ | X | — |
| 0.842 | 21.4 | 2.644 | 67.2 | 12 | X½ | 27.5 |
| 0.85 | 21.6 | 2.669 | 67.8 | 12¼ | Y | — |
| 0.858 | 21.8 | 2.694 | 68.4 | 12½ | Z | 28.75 |
| 0.866 | 22 | 2.719 | 69.1 | 12¾ | Z½ | — |
| 0.874 | 22.2 | 2.744 | 69.7 | 13 | Z1 | — |
| 0.882 | 22.4 | 2.769 | 70.3 | 13¼ | Z1 | — |
| 0.89 | 22.6 | 2.795 | 71 | 13½ | — | — |
| 0.898 | 22.8 | 2.82 | 71.6 | 13¾ | Z2 | — |
| 0.906 | 23 | 2.845 | 72.3 | 14 | Z3 | — |
| 0.914 | 23.2 | 2.87 | 72.9 | 14¼ | — | — |
| 0.922 | 23.4 | 2.895 | 73.5 | 14½ | Z4 | — |
| 0.93 | 23.6 | 2.92 | 74.2 | 14¾ | — | — |
| 0.938 | 23.8 | 2.945 | 74.8 | 15 | — | — |
| 0.946 | 24 | 2.97 | 75.4 | 15¼ | — | — |
| 0.954 | 24.2 | 2.996 | 76.1 | 15½ | — | — |
| 0.962 | 24.4 | 3.021 | 76.7 | 15¾ | — | — |
| 0.97 | 24.6 | 3.046 | 77.4 | 16 | — | — |
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