Japan 20 to EU Ring Size
Conversion
Japan 20 = EU 62
Inner circumference ≈ 62.1 mm · diameter ≈ 19.8 mm.
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Full conversion chart
| Region | Size |
|---|---|
| US | 10 |
| UK | T |
| EU | 62 |
| France | 62 |
| Japan | 20 |
About this conversion
A Japan 20 ring converts to a EU 62. Inner circumference ≈ 62.1 mm · diameter ≈ 19.8 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.