Ring Size Chart
There are many ways to figure out your ring size. Here are the most accurate:
1. Use finger-sizing gauges. They help you to accurately determine your ring size. They can be purchased online from retailers like Amazon or jewelry supply stores.
2. Measure the inside diameter of a ring you already own in mm and use the guide below to figure out the corresponding size.
| US/Canada Sizing | Ring Inner Diameter (mm) |
|
4.5 |
15.3 |
|
5 |
15.7 |
|
5.5 |
16.1 |
|
6 |
16.5 |
|
6.5 |
16.9 |
|
7 |
17.3 |
|
7.5 |
17.7 |
|
8 |
18.1 |
|
8.5 |
18.5 |
|
9 |
19.0 |
|
9.5 |
19.4 |
|
10 |
19.8 |
Measurement source: GIA, https://www.gia.edu/quality-assurance-benchmark/accurate-determination-finger-ring-size