UK 40D to EU Bra Size
Conversion
UK 40D = EU 90D
Sister sizes (same fit if your size is sold out):
95C · 85E
Shop US 40D bras on Amazon
As an Amazon Associate I earn from qualifying purchases.
Full conversion chart
| Region | Size |
|---|---|
| US | 40D |
| UK | 40D |
| EU | 90D |
| France | 105D |
| AU/NZ | 18D |
About this conversion
A UK 40D converts to a EU 90D. 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 EU 90D is out of stock, the sister sizes above fit almost identically because they share the same cup volume.