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US to UK Ring Size Converter
Convert US ring sizes to UK letter sizes and compare nearby EU, Japan, circumference, and diameter values.
Target query: us to uk ring size converter. Use this as a sizing reference, not a seller-specific guarantee.
Conversion tool
Enter the size or measurement you already have. The page returns the closest common chart match across US, UK, EU, Japan, circumference, and diameter.
Result
Select a size to begin
- US
- --
- UK
- --
- EU
- --
- Japan
- --
- Circumference
- --
- Diameter
- --
Converted values will appear here.
Why US to UK conversion needs a chart
US sizes use numbers and half sizes. UK sizing uses letters, so many conversions are close chart matches rather than perfect equivalents.
Example
US 8 is close to UK P in this chart. If the ring is wide or comfort-fit, confirm the brand guidance before choosing the final size.
Reference chart
Ring size conversion table
Use the table for a fast scan, then confirm with the converter and a seller-specific chart when buying jewelry.
| US | UK | EU | Japan | Circumference mm | Diameter mm |
|---|
FAQ
Is this conversion exact?
No. Ring size systems use different reference points, so a conversion is best read as a close chart match.
Why can seller charts differ?
Band width, comfort-fit design, regional chart rounding, and brand tolerances can change the recommended size.
Should I size up or down?
Do not size up or down from a chart alone. Measure at a normal finger temperature and check the seller's return or resizing policy.