How to use
- 1
Pick the system you know.
- 2
Enter the size.
- 3
Read the conversions and full chart.
When to use it
Buying abroad
Convert UK letters to US.
Surprise gifts
Measure a borrowed ring.
Unknown size
Enter finger circumference.
Good to know
- Measure with string or paper in cm.
- Go half a size up for large knuckles.
- Wide bands fit tighter.
FAQ
UK N in US?
About 6.75.
US 7 in mm?
About 54.4 mm circumference.
How is it converted?
Through inner circumference.