Japan 17 to US Ring Size
Conversion
Japan 17 = US 8.5
Inner circumference ≈ 58.3 mm · diameter ≈ 18.5 mm.
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Full conversion chart
| Region | Size |
|---|---|
| US | 8.5 |
| UK | Q |
| EU | 58 |
| France | 58 |
| Japan | 17 |
About this conversion
A Japan 17 ring converts to a US 8.5. Inner circumference ≈ 58.3 mm · diameter ≈ 18.5 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.