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Doubts about your ring size? We’re here to help you find the right fit. Choose a finger for measuring, or your own ring, and let’s get started.
Cut a narrow strip of paper or piece of string and wrap it comfortably around your intended finger
Mark where the ends meet
Match the measurement to the circumference column in the below conversion chart. If it falls between 2 sizes, we advise you to order the larger size.
| Finger | Ring Size | ||
|---|---|---|---|
| Circumference | UK/Ireland | US | EU |
| 45mm | G | 3.75 | 45 |
| 46.5mm | H | 4.25 | 46.5 |
| 47.8mm | I | 4.5 | 47.5 |
| 49.0mm | J | 5 | 48.5 |
| 50.3mm | K | 5.5 | 50 |
| 51.5mm | L | 6 | 55 |
| 52.8mm | M | 6.5 | 52.5 |
| 54.0mm | N | 6.75 | 53.5 |
| 53.7mm | O | 7 | 55 |
| 56.6mm | P | 7.5 | 56 |
| 57.8mm | Q | 8 | 57.5 |
| 59.1mm | R | 8.5 | 59 |
| 60.3mm | S | 9 | 60.25 |
| 61.29mm | T | 9.5 | 62.75 |
| 62.8mm | U | 10 | 63 |
| 63.8mm | V | 10.5 | 64 |
Choose which finger you’d like your new ring to sit on, then select a ring that already fits comfortably on it.
Measure the inside diameter of the ring in mm (a straight line through the middle of the circle).
Use the chart below to determine your ring size.
| Finger | Ring Size | ||
|---|---|---|---|
| Diameter | UK/Ireland | US | EU |
| 14.5mm | G | 3.75 | 45 |
| 14.8mm | H | 4.25 | 46.5 |
| 15.2mm | I | 4.5 | 47.5 |
| 15.6mm | J | 5 | 48.5 |
| 16.0mm | K | 5.5 | 50 |
| 16.4mm | L | 6 | 55 |
| 16.8mm | M | 6.5 | 52.5 |
| 17.2mm | N | 6.75 | 53.5 |
| 17.4mm | O | 7 | 55 |
| 18.0mm | P | 7.5 | 56 |
| 18.4mm | Q | 8 | 57.5 |
| 19.0mm | R | 8.5 | 59 |
| 19.2mm | S | 9 | 60.25 |
| 19.5mm | T | 9.5 | 62.75 |
| 20mm | U | 10 | 63 |
| 20.3mm | V | 10.5 | 64 |
Check out our Printable Ring Size Guide, or contact our customer care team who are on hand to help.