The A1 Jewellers free ring size service
The easiest and most accurate way to find your ring size is to visit our A1 Jewellers showroom in Manchester, where our trained staff can measure your finger using a professional, industry-standard ring sizer. If you're buying for someone else, try to bring along one of their existing rings (ideally with a similar width) to have it measured.
If you're not based nearby, you can also visit any local jeweller to have your size measured.
Prefer to measure at home? We’ve made it simple.
Download Our Printable Ring Sizer
Click the button below to download and print our A4 ring sizer tool.
✂️ Cut out the sizing strip and follow the instructions to find your perfect fit.
Important: To ensure the printout is scaled correctly, place a credit card in the box provided on the sheet. If it fits perfectly, your print is accurate.
Please Note:
Many of our rings are unique and may only be available in one size. This will be clearly stated in the 'Key Features' section on each product page. If you select a different size from the dropdown, we offer complimentary resizing after purchase.
However, resized or altered products are non-refundable, and slight changes in weight or appearance may occur during the resizing process.
Inside Diameter | Inside Circumference | Sizes | ||||||
(in) | (mm) | (in) | (mm) | United States and Canada |
United Kingdom, Ireland, Australia and New Zealand |
China, Japan, South America |
India | Italy, Spain, Netherlands, Switzerland |
0.458 | 11.63 | 1.44 | 36.5 | 0 | ||||
0.466 | 11.84 | 1.46 | 37.2 | ¼ | ||||
0.474 | 12.04 | 1.49 | 37.8 | ½ | A | |||
0.482 | 12.24 | 1.51 | 38.5 | ¾ | A½ | |||
0.49 | 12.45 | 1.54 | 39.1 | 1 | B | 1 | ||
0.498 | 12.65 | 1.56 | 39.7 | 1¼ | B½ | |||
0.506 | 12.85 | 1.59 | 40.4 | 1½ | C | 0.5 | ||
0.514 | 13.06 | 1.61 | 41 | 1¾ | C½ | 1 | 1 | |
0.546 | 13.87 | 1.72 | 43.6 | 2¾ | E½ | 4 | 3.5 | |
0.53 | 13.46 | 1.67 | 42.3 | 2¼ | D½ | 2.25 | ||
0.538 | 13.67 | 1.69 | 42.9 | 2½ | E | 3 | 3 | 3 |
0.554 | 14.07 | 1.74 | 44.2 | 3 | F | 4 | 4.25 | |
0.562 | 14.27 | 1.77 | 44.8 | 3¼ | F½ | 5 | 5 | 4.75 |
0.57 | 14.48 | 1.79 | 45.5 | 3½ | G | 5.5 | ||
0.578 | 14.68 | 1.82 | 46.1 | 3¾ | G½ | 6 | 6 | 6 |
0.586 | 14.88 | 1.84 | 46.8 | 4 | H | 7 | 6.75 | |
0.594 | 15.09 | 1.87 | 47.4 | 4¼ | H½ | 7 | 7.5 | |
0.602 | 15.29 | 1.89 | 48 | 4½ | I | 8 | 8 | 8 |
0.61 | 15.49 | 1.92 | 48.7 | 4¾ | J | 9 | 8.75 | |
0.618 | 15.7 | 1.94 | 49.3 | 5 | J½ | 9 | 9.25 | |
0.626 | 15.9 | 1.97 | 50 | 5¼ | K | 10 | 10 | |
0.634 | 16.1 | 1.99 | 50.6 | 5½ | K½ | 10 | 10.5 | |
0.642 | 16.31 | 2.02 | 51.2 | 5¾ | L | 11 | 11.25 | |
0.65 | 16.51 | 2.04 | 51.9 | 6 | L½ | 11 | 12 | 11.75 |
0.658 | 16.71 | 2.07 | 52.5 | 6¼ | M | 12 | 12.5 | |
0.666 | 16.92 | 2.09 | 53.1 | 6½ | M½ | 13 | 13 | 13.25 |
0.674 | 17.12 | 2.12 | 53.8 | 6¾ | N | 13.75 | ||
0.682 | 17.32 | 2.14 | 54.4 | 7 | N½ | 14 | 14 | 14.5 |
0.69 | 17.53 | 2.17 | 55.1 | 7¼ | O | 15 | 15 | |
0.698 | 17.73 | 2.19 | 55.7 | 7½ | O½ | 15 | 15.75 | |
0.706 | 17.93 | 2.22 | 56.3 | 7¾ | P | 16 | 16.25 | |
0.714 | 18.14 | 2.24 | 57 | 8 | P½ | 16 | 17 | 17 |
0.722 | 18.34 | 2.27 | 57.6 | 8¼ | Q | 17.5 | ||
0.73 | 18.54 | 2.29 | 58.3 | 8½ | Q½ | 17 | 18 | 18.25 |
0.738 | 18.75 | 2.32 | 58.9 | 8¾ | R | 19 | 19 | |
0.746 | 18.95 | 2.34 | 59.5 | 9 | R½ | 18 | 19.5 | |
0.754 | 19.15 | 2.37 | 60.2 | 9¼ | S | 20 | 20.25 | |
0.762 | 19.35 | 2.39 | 60.8 | 9½ | S½ | 19 | 21 | 20.75 |
0.77 | 19.56 | 2.42 | 61.4 | 9¾ | T | 21.5 | ||
0.778 | 19.76 | 2.44 | 62.1 | 10 | T½ | 20 | 22 | 22 |
0.786 | 19.96 | 2.47 | 62.7 | 10¼ | U | 21 | 23 | 22.75 |
0.794 | 20.17 | 2.49 | 63.4 | 10½ | U½ | 22 | 23.25 | |
0.802 | 20.37 | 2.52 | 64 | 10¾ | V | 24 | 24 | |
0.81 | 20.57 | 2.54 | 64.6 | 11 | V½ | 23 | 25 | 24.75 |
0.818 | 20.78 | 2.57 | 65.3 | 11¼ | W | 25.25 | ||
0.826 | 20.98 | 2.59 | 65.9 | 11½ | W½ | 24 | 26 | 26 |
0.834 | 21.18 | 2.62 | 66.6 | 11¾ | X | 26.5 | ||
0.842 | 21.39 | 2.65 | 67.2 | 12 | X½ | 25 | 27 | 27.25 |
0.85 | 21.59 | 2.67 | 67.8 | 12¼ | Y | 28 | 27.75 | |
0.85 | 21.59 | 2.67 | 67.8 | 12¼ | Y½ | 28 | 27.75 | |
0.858 | 21.79 | 2.7 | 68.5 | 12½ | Z | 26 | 28.5 | |
0.866 | 22 | 2.72 | 69.1 | 12¾ | Z½ | 29 | 29 | |
0.874 | 22.2 | 2.75 | 69.7 | 13 | 27 | 30 | 29.75 | |
0.882 | 22.4 | 2.77 | 70.4 | 13¼ | Z1 | 30.5 | ||
0.89 | 22.61 | 2.8 | 71 | 13½ | 31 | 31 | ||
0.898 | 22.81 | 2.82 | 71.7 | 13¾ | Z2 | 32 | 31.75 | |
0.906 | 23.01 | 2.85 | 72.3 | 14 | Z3 | 32.25 | ||
0.914 | 23.22 | 2.87 | 72.9 | 14¼ | 33 | 33 | ||
0.922 | 23.42 | 2.9 | 73.6 | 14½ | Z4 | 33.5 | ||
0.93 | 23.62 | 2.92 | 74.2 | 14¾ | 34 | 34.25 | ||
0.938 | 23.83 | 2.95 | 74.8 | 15 | 35 | 34.75 | ||
0.946 | 24.03 | 2.97 | 75.5 | 15¼ | Z5 | 35.5 | ||
0.954 | 24.23 | 3 | 76.1 | 15½ | 36 | 36.25 | ||
0.962 | 24.43 | 3.02 | 76.8 | 15¾ | Z6 | 36.75 | ||
0.97 | 24.64 | 3.05 | 77.4 | 16 | 37 | 37.5 |