👙 Bra Size
40H Bra Size — UK, EU & French Conversion
A US 40H bra in UK, European and French sizing, with its sister sizes. Not sure 40H is right? Measure with the bra calculator first.
US 40H = UK 40FF
EU 90H · French 105H
A US 40H bra converts to UK 40FF, EU 90H and French 105H. The band number maps on a fixed scale, while cup letters shift between systems above D.
| Region | Size |
|---|---|
| US | 40H |
| UK | 40FF |
| EU (Europe) | 90H |
| FR / ES (France, Spain) | 105H |
Sister sizes for 40H
Same cup volume, different band — try these if the band feels tight or loose but the cup is right:
38ISister down
42GSister up
⚠️ US cup lettering above D varies by brand (DD vs E, DDD vs F). Match by the EU/UK equivalent when a brand's letters differ.
All bra sizes → · Bra calculator → · Converter →
What is a US 40H bra in UK and EU sizing?
A US 40H is a UK 40FF, EU 90H and French 105H.
What are the sister sizes of 40H?
Same cup volume, different band: 38I, 42G.
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