Reviewed
34A bra size
A 34A has a 34-inch band and a A cup, about 1 inches between band and bust. In the UK it is 34A, in Australia 12A and in Europe 75A.
- US
- 34A
- UK
- 34A
- AU
- 12A
- EU
- 75A
- FR
- 90A
Also fits (sister sizes): 32B firmer band · 36AA looser band · all same-volume sizes ↓
34A measurements
- Snug underbust
- 34–35 in · 86–89 cm
- Bust, fullest part
- about 35 in · 88–90 cm
- Cup difference
- 1 in (A cup)
These are starting points from the band-and-cup method. Brands differ by about a size, so a two-minute measurement beats any chart.
34A sister sizes
Same cup volume, different band. If a 34A band feels too loose, go down a band and up a cup; if it feels tight, go up a band and down a cup.
If a 34A doesn't fit
Not sure what's wrong? Run through the 4-point fit check.
Compare 34A
Sizes next to 34A
34A questions
What is the sister size of 34A?
32B (one band down, one cup up) and 36AA (one band up, one cup down). Sister sizes hold the same cup volume on a different band.
What is 34A in UK, Australian and European sizes?
UK 34A, Australia 12A, Europe 75A and France 90A. US and UK cup letters match up to DD and then split.
What measurements are a 34A?
A snug underbust of about 34–35 in (86–89 cm) and a bust of about 35 in (88–90 cm). Measure with the tape level and use the calculator for an exact result.
Is 34A a big size?
34A has a mid-range cup volume for a 34 band. Cup letters only mean something next to the band: a 34A holds the same as 28D or 30C.