Diamond Ring Size Converter For US To UK And EU Sizes
As a global online diamond company, speaking regularly with clients from the UK, the US and Europe, we are often asked how to convert one’s ring size to ensure the diamond ring being purchased is the perfect fit. We have therefore created a helpful chart that is easy to use.
As a global online diamond company, speaking regularly with clients from the UK, the US and Europe, we are often asked how to convert one’s ring size to ensure the diamond ring being purchased is the perfect fit. We have therefore created a helpful chart that is easy to use.
The chart we have provided is an easy method of conversion from US and Canadian number sizes to the "Wheat Sheaf" system of letter sizes used in Ireland, the U.K. and Australia. Please note that these measurements are exact for the American system and approximate for the other sizing scales.
| UK Size | US Size | EU Size* | Millimeter |
|---|---|---|---|
| C | 1.5 | 40.5 | 12.77 |
| D | 2 | 41.5 | 13.29 |
| E | 2.5 | 42.75 | 13.60 |
| F | 3 | 44.5 | 14.02 |
| G | 3.5 | 45.5 | 14.43 |
| H | 4 | 46.5 | 14.85 |
| I | 4.5 | 47.75 | 15.26 |
| J | 4.75 | 49.5 | 15.47 |
| K | 5.25 | 50.25 | 15.88 |
| L | 5.75 | 51.5 | 16.30 |
| M | 6 | 52.5 | 16.50 |
| N | 6.25 | 54 | 16.71 |
| O | 7.25 | 55.25 | 17.54 |
| P | 7.75 | 56.25 | 17.95 |
| Q | 8.25 | 57.5 | 18.37 |
| R | 8.75 | 58.5 | 18.78 |
| S | 9.25 | 60.25 | 19.20 |
| T | 9.75 | 61.25 | 19.61 |
| U | 10.25 | 62.5 | 20.03 |
| V | 10.75 | 63.73 | 20.44 |
| W | 11.25 | 65.25 | 20.85 |
| X | 11.75 | 66.25 | 21.27 |
| Y | 12.25 | 67.5 | 21.68 |
| Z | 12.75 | 68.75 | 21.89 |
* Size comparisons, accurate to within approximately 1/4 of a finger size.
We have the ring that
you are looking for
What If I Can’t Find My Size For The Ring I Like?
We have a vast array of diamond engagement rings and wedding rings on our website of different sizes. If you are not able to find the right size for the ring you have chosen, we offer free ring size adjustments of up to two US sizes (below or above) for most of our rings. If you have any questions please feel free to contact one of our expert jewelers at: 1-800-557-709.