Japan 12 to UK Ring Size
Conversion
Japan 12 = UK M
Inner circumference ≈ 53.1 mm · diameter ≈ 16.9 mm.
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Full conversion chart
| Region | Size |
|---|---|
| US | 6.5 |
| UK | M |
| EU | 53 |
| France | 53 |
| Japan | 12 |
About this conversion
A Japan 12 ring converts to a UK M. Inner circumference ≈ 53.1 mm · diameter ≈ 16.9 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.