The A1 Jewellers free ring size service
The easiest and most accurate way to find your ring size is to have your finger measured by one of our friendly, trained and professional staff at our A1 Jewellers shop in Manchester if you live close by. We use an industry-standard ring sizer to quickly ascertain your ring size for you. If you are purchasing for a friend or a loved one, try to borrow one of their rings, preferably one with a similar width and style, and take it along with you to be measured. If you do not live close by then you can visit any Jewellers near you and ask to have them measure your ring size for you.
Knowing your ring size
At A1 Jewellers we like to make sure that your online shopping experience is as easy and convenient as possible. Whether you are buying an Indian ring, white gold or yellow gold ring, a ring set with one carat or quarter carat diamonds, we understand the importance of getting the ring size right.
To find out your ring size, simply draw around the inside of a ring you know fits, preferably one with a similar width and style then measure the diameter. Then just use our conversion chart below to choose the closest size for you.
PLEASE NOTE: Many of our rings are unique and available in only one size - this is specified in the product's 'Key Features', and is the default size in the dropdown. If you chose a different size from our drop-down, you are opting to have a complementary size alteration. Product adjustments, or resizing will be made after purchase. A1Jewellers will not be liable for any differences in weight or appearance that may occur as a result of these changes. Resized or altered products are strictly non-refundable.
| 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 | ||
