Use our ring size conversion chart below to find your ring size in different countries.
Ring size 18mm diameter.
It shows ring sizes in both mm and inches plus internal diameter and external diameter.
In the united states canada and mexico for indicating a rings size uses a numerical measure for whole and half rings sizes an increase of a full ring size is an increase of 0 032 inch 0 8128 mm in diameter or roughly 1 10 inch in inside circumference.
There are several systems for indicating a rings size used around the world.
International ring size conversion chart.
Below is our full ring size chart.
The information presented here has been compiled from many sources in various countries to help you determine your local ring size compared to those from other countries.
Ring diameter mm usa canada.
An increase of a full size is an increase of 0 032 inch 0 8128 mm in diameter or roughly 1 10 inch more precisely 0 1005 in or 2 55 mm in inside circumference.
Here is a helpful ring size conversion chart.
If you need help with this please email chat or call us to assist you.
We recommend that if you are a 1 4 size that you order the 1 2 size down.
For instance if you are measure to be a 10 1 4.
The same chart covers ring sizes for both women and men as they both use the same systems of.
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