At Coral Covey we use the UK Standard of ring sizing (where each size is represented by a letter, e.g. ‘M’). To order from us, you will need to know your ring size according to the UK Standard sizing. On the page below, we offer a conversion table if you know your ring size based on another standard.
If you don’t know your size or the ring size of your partner, we recommend getting in touch. There are two relatively simple methods of determining the size, and we can walk you through the process. Send us an email and we will be in touch soon.
Sizing conversion chart
If you have an existing ring size that requires conversion to the UK Standard, then please refer to this chart:
| UK Size | European Size (Approx.) |
American Size (Approx.) |
Inside Diameter |
||
| Inches | mm | ||||
| G | 0.5680 | 14.427 | |||
| G½ | 0.5758 | 14.625 | |||
| 46 | 0.5765 | 14.642 | |||
| 4 | 0.5820 | 14.783 | |||
| H | 0.5835 | 14.821 | |||
| 47 | 0.5890 | 14.961 | |||
| H½ | 0.5913 | 15.019 | |||
| 4½ | 0.5980 | 15.189 | |||
| I | 0.5990 | 15.215 | |||
| 48 | 0.6015 | 15.279 | |||
| I½ | 0.6068 | 15.413 | |||
| 49 | 5 | 0.6141 | 15.597 | ||
| J | 0.6145 | 15.608 | |||
| J½ | 0.6223 | 15.806 | |||
| 50 | 0.6266 | 15.916 | |||
| K | 5½ | 0.6300 | 16.002 | ||
| K½ | 0.6378 | 16.200 | |||
| 51 | 0.6391 | 16.234 | |||
| L | 6 | 0.6455 | 16.396 | ||
| 52 | 0.6517 | 16.552 | |||
| L½ | 0.6533 | 16.594 | |||
| M | 0.6610 | 16.789 | |||
| 6½ | 0.6620 | 16.815 | |||
| 53 | 0.6642 | 16.871 | |||
| M½ | 0.6688 | 16.988 | |||
| N | 0.6765 | 17.183 | |||
| 54 | 0.6767 | 17.189 | |||
| 7 | 0.6780 | 17.221 | |||
| N½ | 0.6843 | 17.381 | |||
| 55 | 0.6893 | 17.507 | |||
| O | 0.6920 | 17.577 | |||
| 7½ | 0.6940 | 17.628 | |||
| O½ | 0.6998 | 17.775 | |||
| 56 | 0.7018 | 17.826 | |||
| P | 0.7075 | 17.971 | |||
| 8 | 0.7100 | 18.034 | |||
| 57 | 0.7143 | 18.144 | |||
| P½ | 0.7153 | 18.169 | |||
| Q | 0.7230 | 18.364 | |||
| 8½ | 0.7265 | 18.453 | |||
| 58 | 0.7269 | 18.462 | |||
| Q½ | 0.7308 | 18.562 | |||
| R | 0.7385 | 18.758 | |||
| 59 | 0.7394 | 18.780 | |||
| 9 | 0.7430 | 18.872 | |||
| R½ | 0.7463 | 18.956 | |||
| 60 | 0.7519 | 19.098 | |||
| S | 0.7540 | 19.152 | |||
| 9½ | 0.7590 | 19.279 | |||
| S½ | 0.7618 | 19.350 | |||
| 61 | 0.7644 | 19.416 | |||
| T | 0.7695 | 19.545 | |||
| 62 | 0.7770 | 19.736 | |||
| T½ | 0.7772 | 19.741 | |||
| 10 | 0.7780 | 19.761 | |||
| U | 0.7850 | 19.939 | |||
| 63 | 0.7895 | 20.054 | |||
| U½ | 0.7928 | 20.137 | |||
| 10½ | 0.7940 | 20.168 | |||
| V | 0.8005 | 20.333 | |||
| 64 | 0.8020 | 20.372 | |||
| V½ | 0.8083 | 20.531 | |||
| 11 | 0.8110 | 20.599 | |||
| 65 | 0.8146 | 20.690 | |||
| W | 0.8160 | 20.726 | |||
| W½ | 0.8238 | 20.925 | |||
| 66 | 11½ | 0.8271 | 21.008 | ||
| X | 0.8315 | 21.120 | |||
| X½ | 0.8393 | 21.318 | |||
| 67 | 0.8396 | 21.326 | |||
| 12 | 0.8430 | 21.412 | |||
| Y | 0.8470 | 21.514 | |||
| 68 | 0.8522 | 21.645 | |||
| Y½ | 0.8548 | 21.712 | |||
| 12½ | 0.8590 | 21.819 | |||
| Z | 0.8625 | 21.908 | |||
| 69 | 0.8647 | 21.963 | |||
| Z½ | 0.8703 | 22.106 | |||
| 13 | 0.8750 | 22.225 | |||
