US 40I to AU/NZ Bra Size
Conversion
US 40I = AU/NZ 18G
Sister sizes (same fit if your size is sold out):
20FF · 16GG
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Full conversion chart
| Región | Talla |
|---|---|
| US | 40I |
| UK | 40G |
| EU | 90I |
| France | 105I |
| AU/NZ | 18G |
About this conversion
A US 40I converts to a AU/NZ 18G. Bra sizes have two parts — the band (number) and the cup (letter) — and both are labelled differently across regions, which is why the same bra carries a different size in each country. Always check the brand's own size guide too, as cup grading varies between manufacturers.
If AU/NZ 18G is out of stock, the sister sizes above fit almost identically because they share the same cup volume.