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30G Bra Size — UK, EU & French Conversion

A US 30G bra in UK, European and French sizing, with its sister sizes. Not sure 30G is right? Measure with the bra calculator first.

Reviewed by the 247Sizing teamLast updated: 27 August 2026
US 30G = UK 30F
EU 65G · French 80G

A US 30G bra converts to UK 30F, EU 65G and French 80G. The band number maps on a fixed scale, while cup letters shift between systems above D.

RegionSize
US30G
UK30F
EU (Europe)65G
FR / ES (France, Spain)80G

Sister sizes for 30G

Same cup volume, different band — try these if the band feels tight or loose but the cup is right:

28HSister down
32DDDSister 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.

28G · 32G · 30DDD · 30H

All bra sizes → · Bra calculator → · Converter →

What is a US 30G bra in UK and EU sizing?

A US 30G is a UK 30F, EU 65G and French 80G.

What are the sister sizes of 30G?

Same cup volume, different band: 28H, 32DDD.

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