Reviewed
30G (UK 30F) bra size
A 30G has a 30-inch band and a G cup, about 7 inches between band and bust. In the UK it is 30F, in Australia 8F and in Europe 65G.
- US
- 30G
- UK
- 30F
- AU
- 8F
- EU
- 65G
- FR
- 80G
Also fits (sister sizes): 28H firmer band · 32DDD looser band · all same-volume sizes ↓
30G measurements
- Snug underbust
- 30–31 in · 76–79 cm
- Bust, fullest part
- about 37 in · 93–95 cm
- Cup difference
- 7 in (G 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.
30G sister sizes
Same cup volume, different band. If a 30G 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 30G doesn't fit
- Band rides up at the back
- Try 28H
- Band digs in, cups fit
- Try 32DDD
- Spilling over the cups
- Try 30H
- Cups gape or wrinkle
- Try 30DDD
Not sure what's wrong? Run through the 4-point fit check.
30G questions
What is the sister size of 30G?
28H (one band down, one cup up) and 32DDD (one band up, one cup down). Sister sizes hold the same cup volume on a different band.
What is 30G in UK, Australian and European sizes?
UK 30F, Australia 8F, Europe 65G and France 80G. US and UK cup letters match up to DD and then split.
What measurements are a 30G?
A snug underbust of about 30–31 in (76–79 cm) and a bust of about 37 in (93–95 cm). Measure with the tape level and use the calculator for an exact result.
Is 30G a big size?
30G has a fuller cup volume for a 30 band. Cup letters only mean something next to the band: a 30G holds the same as 28H or 32DDD.