What are the sister sizes of 30G?

28H and 32DDD — same cup volume, different band.

Is 30G the same in every brand?

No. A 30G can fit differently between brands because of pattern, fabric and cup shape. Use it as a starting point and try a sister size when switching brands.

30G bra size — conversion chart, sister sizes & brands

A 30G bra (US notation) in every regional standard. The same band-and-cup, labelled eight different ways.

US	UK	EU	FR	IT	AU	JP	IN
30G	30F	65G	80G	65G	8F	65G	30F

Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.

Sister sizes of 30G

Sister sizes hold the same cup volume with a different band — the quickest fix when a band feels too tight or too loose.

28H 32DDD

Not sure you're a 30G? Two measurements, two minutes — free, nothing stored.

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Brands that make G-cup bras

30G FAQ

What is 30G in EU sizing?: 30G (US) is EU 65G. In UK sizing it is 30F. Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.
What are the sister sizes of 30G?: 28H and 32DDD — same cup volume, different band.
Is 30G the same in every brand?: No. A 30G can fit differently between brands because of pattern, fabric and cup shape. Use it as a starting point and try a sister size when switching brands.