US 40A to UK Bra Size
Conversion
US 40A = UK 40A
Sister sizes (same fit if your size is sold out):
42AA · 38B
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Full conversion chart
| Region | Größe |
|---|---|
| US | 40A |
| UK | 40A |
| EU | 90A |
| France | 105A |
| AU/NZ | 18A |
About this conversion
A US 40A converts to a UK 40A. 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 UK 40A is out of stock, the sister sizes above fit almost identically because they share the same cup volume.