ISO 48 in UK Ring Size

ISO 48 UK I
Also: US 4.5
Rings Size
Inner circumference:45.5–50.5mm

Size Chart

ISO US UK
44 3 F
46 3.5 G
47 4 H
48 4.5 I
49 5 J
51 5.5 K
52 6 L

Frequently Asked Questions

What is ISO 48 in UK rings size?
ISO 48 converts to approximately UK I in rings sizing.
How do I convert ISO 48 to UK?
ISO 48 equals UK I. This conversion is based on standard sizing charts, but may vary by brand.
What ring size should I order if I'm ISO 48?
If your ring size is ISO 48, order UK I. When in doubt, go slightly larger as rings can be resized down.