Size chart
Unsure about your size? Below you will find clear guidance for rings, bracelets and watches to help you choose a suitable size.
Ring size conversion table
Our ring sizes are shown in millimetres. Use the table below to compare inside diameter, finger circumference, US and UK ring sizes.
| Ring size (EU) | Inside diameter (mm) | Finger circumference (mm) | US | UK |
|---|---|---|---|---|
| 47 | 15.0 | 47 | 4 | H 1/2 |
| 50 | 16.0 | 50 | 5 1/2 | K 1/4 |
| 52 | 16.5 | 52 | 6 | L 1/2 |
| 53 | 17.0 | 53 | 6 3/4 | M 1/2 |
| 55 | 17.5 | 55 | 7 1/2 | O |
| 57 | 18.0 | 57 | 8 | P 1/2 |
| 60 | 19.0 | 60 | 9 | R 3/4 |
| 63 | 20.0 | 63 | 10 1/4 | U 1/2 |
| 66 | 21.0 | 66 | 11 1/2 | X |
| 69 | 22.0 | 69 | 12 3/4 | Z |
Bracelets
Measure closely around your wrist with a tape measure, just behind the wrist bone. Alternatively, use a string and measure it against a ruler. Wrist circumference differs from the total bracelet length. Different models can therefore have the same fitting size even when their overall lengths differ.
| Wrist circumference (cm) | Size | Approximate bracelet length |
|---|---|---|
| ca. 14 cm | C | ca. 16 cm |
| ca. 15 cm | C+ | ca. 17 cm |
| ca. 16 cm | D | ca. 18 cm |
| ca. 16,5 cm | D+ | ca. 18,5 cm |
| ca. 17 cm | E | ca. 19 cm |
| ca. 18 cm | E+ | ca. 20 cm |
| ca. 19 cm | F | ca. 21 cm |
| ca. 20 cm | F+ | ca. 22 cm |
| ca. 21 cm | G | ca. 23 cm |
Ring size
Determine your ring size by measuring your finger circumference or the inside diameter of a well-fitting ring. Measure carefully, preferably towards the end of the day when your fingers are at their usual size.
Wide rings
A wider ring may need a slightly larger size. It slides over the knuckle less easily than a narrow ring. Preferably measure a well-fitting ring of a similar width to the model you would like to order.
| UK | US | Inside diameter (mm) | Finger circumference (mm) |
|---|---|---|---|
| H 1/2 | 4 | 15 | 47 |
| K 1/4 | 5 1/2 | 16 | 50 |
| L 1/2 | 6 | 16,5 | 52 |
| M 1/2 | 6 3/4 | 17 | 53 |
| O | 7 1/2 | 17,5 | 55 |
| P 1/2 | 8 | 18 | 57 |
| R 3/4 | 9 | 19 | 60 |
| U 1/2 | 10 1/4 | 20 | 63 |
| X | 11 1/2 | 21 | 66 |
| Z | 12 3/4 | 22 | 69 |
Watches
Give us your actual measured wrist circumference without adding 1 cm yourself. We aim to adjust the watch bracelet to fit as well as possible. Our starting point is your wrist circumference plus around 1 cm of wearing space, depending on the watch, links and clasp. This is a guide; the final fit can vary.
| Wrist circumference | Watch size guidance | Suggested case diameter |
|---|---|---|
| 14 to 16 cm | Small | 28 to 34 mm |
| 16 to 18 cm | Medium | 34 to 40 mm |
| 18 to 20 cm | Large | 40 to 44 mm |
| 20 cm or more | Extra large | 44 mm or more |
The watch section provides general guidance on comfort and fit.
A4 measuring guide for rings, bracelets and watches
Download the guide in your language. Each document contains ring circles, a wrist measuring strip and watch cases at actual size.
Print on A4 at 100% / Actual size. Turn off Fit to page and use a real ruler to check that the calibration line measures exactly 50 mm.