US 5.5 in ISO Ring Size
Inner circumference:48.1–53.1mm
Size Chart
| US | UK | ISO |
|---|---|---|
| 4 | H | 47 |
| 4.5 | I | 48 |
| 5 | J | 49 |
| 5.5 | K | 51 |
| 6 | L | 52 |
| 6.5 | M | 53 |
| 7 | N | 54 |
Frequently Asked Questions
What is US 5.5 in ISO rings size?
US 5.5 converts to approximately ISO 51 in rings sizing.
How do I convert US 5.5 to ISO?
US 5.5 equals ISO 51. This conversion is based on standard sizing charts, but may vary by brand.
What ring size should I order if I'm US 5.5?
If your ring size is US 5.5, order ISO 51. When in doubt, go slightly larger as rings can be resized down.