Ring Size Guide
Size Correspondence Chart
All our rings are available in US sizes (international standard). Find below the equivalences with French and UK sizes.
| US Size | FR Size | UK Size | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|
| 6 | 51-52 | L-M | 16.5 | 51.8 |
| 7 | 54-55 | N-O | 17.3 | 54.4 |
| 8 | 57-58 | P-Q | 18.1 | 57.0 |
| 9 popular | 60-61 | R-S | 19.0 | 59.5 |
| 10 popular | 62-63 | T-U | 19.8 | 62.1 |
| 11 popular | 64-65 | V-W | 20.6 | 64.6 |
| 12 | 66-67 | X-Y | 21.4 | 67.2 |
| 13 | 69-70 | Z+1 | 22.2 | 69.7 |
Find Your Size
Method 1, With an existing ring
The most reliable method if you already own a ring that fits you well.
1
Choose a well-fitting ring
Select a ring that you wear comfortably on the desired finger. Make sure it is not too tight and does not spin.
2
Measure the inner diameter
Place the ring flat on a ruler and measure the inner diameter in millimeters (from one inner edge to the other).
3
Consult the chart
Transfer the measurement to the chart above or use the converter. If you are between two sizes, choose the larger size.
Method 2, With a string or strip of paper
Ideal if you don't have a reference ring.
1
Wrap the string around your finger
Take a string or a thin strip of paper. Wrap it around the base of the desired finger, passing over the knuckle.
2
Mark the crossing point
With a pen, mark the exact spot where the string crosses. The string should be snug but not tight; it should be able to slide over the knuckle.
3
Measure the length
Unroll the string and measure the length between the two marks in millimeters. This is your circumference. Enter it into the converter above.
Important Tips
Measure at the right time
Your finger size changes throughout the day. Measure at the end of the day, when your fingers are at their largest. Avoid measuring when you are cold (shrunken fingers) or after physical exertion (swollen fingers).
Our rings are comfort fit
All Maison Kardinal rings are comfort fit (rounded interior). They slide on more easily than standard flat-interior rings. If you are used to classic rings, your comfort fit size may be the same or half a size smaller.
Between two sizes?
Always choose the larger size. A slightly larger ring will be comfortable, while a ring that is too tight will be impossible to wear. Our tungsten rings cannot be resized, so choosing the correct size is essential.
Tungsten cannot be resized
Unlike gold or silver, tungsten is an extremely hard metal that cannot be enlarged or reduced. In case of an incorrect size, we offer a free exchange within 30 days.