EU 45 to US Ring Size
Conversion
EU 45 = US 3.5
Inner circumference ≈ 45.5 mm · diameter ≈ 14.5 mm.
Shop US 3.5 rings on Amazon
As an Amazon Associate I earn from qualifying purchases.
Full conversion chart
| Region | Size |
|---|---|
| US | 3.5 |
| UK | G |
| EU | 45 |
| France | 45 |
| Japan | 5 |
About this conversion
A EU 45 ring converts to a US 3.5. Inner circumference ≈ 45.5 mm · diameter ≈ 14.5 mm. Ring sizes all describe one physical measurement — the inner circumference of the band — that each country labels differently.
To check at home, measure the inside diameter of a ring that already fits and compare it to the millimetre figure above.