All Mantor rings are measured in EU sizing (inner circumference in millimeters).

Note:

Due to the solid, wide-profile design of our rings, they fit snugger than standard thin bands. If you are between two sizes, we recommend selecting one size up.

Ring Size Conversion

How to Measure

Option 1: Measure an existing ring
Place a ring that fits you well flat on a ruler and measure the inside diameter in millimeters (excluding the metal).

Option 2: Measure your finger
Wrap a strip of paper around the base of your finger or knuckle, mark where it overlaps, and measure the length in millimeters against a ruler. That measurement corresponds to your EU size.

Fit Tips

• If your knuckle is wider than the base of your finger, pick a size between both measurements so the ring slides over smoothly.
• Measure at room temperature in the late afternoon, as fingers can be slightly slimmer in the morning or cold weather.