Common reference
Ring Size Chart
Use this chart when you want a plain reference table without filling out the converter. It covers the same common ring sizes used throughout this site.
Comparison table
Common ring size conversions
| US / Canada | UK / Australia | Europe / ISO | Japan | Circumference (mm) | Diameter (mm) |
|---|
This chart is for reference. Always compare it with the seller's own sizing notes when possible.
How to use the chart well
- Use the regional size you already know as your starting point.
- If you measured your finger with a ruler, use the circumference or diameter columns instead of guessing.
- Wide rings can feel tighter than thin rings in the same labeled size.
- For gifts and custom pieces, it is safer to confirm the brand's own fit notes before buying.