Dont't know your ring size?


There are two simple ways to measure your ring size at home.

Measure an existing ring

Place a ring that fits you well on a ruler and measure the internal diameter in millimetres.
Use our conversion chart below to find your size in US, UK, or EU.

Measure your finger

Wrap a thin strip of paper or string around the base of your finger.
Mark where it overlaps, then measure the length in millimetres.
This gives you the circumference, which you can match to our chart.

Use the chart below to find your perfect Atlas Carré size.

Circumference (mm) Internal Diameter (mm) US / CAN UK / AUS Europe
44.214.13F44
45.514.53.5G45
46.814.94H 1/246.5
48.015.34.5I 1/248
49.315.75J 1/249
50.616.15.5K 1/250.5
51.916.56L 1/252
53.116.96.5M 1/253
54.417.37O54.5
55.717.77.5P56
57.018.18Q57
58.318.58.5R58.5
59.519.09S60
60.819.49.5T61
62.119.810U62.5
63.420.210.5V64
64.620.611W65
65.921.011.5X66.5
67.221.412Y68
68.521.812.5Z69
69.722.213Z 170

PRO TIP: measure your finger at the end of the day and avoid measuring when your hands are cold, as finger size can vary slightly.