Reviewed
30C bra size
A 30C has a 30-inch band and a C cup, about 3 inches between band and bust. In the UK it is 30C, in Australia 8C and in Europe 65C.
- US
- 30C
- UK
- 30C
- AU
- 8C
- EU
- 65C
- FR
- 80C
Also fits (sister sizes): 28D firmer band · 32B looser band · all same-volume sizes ↓
30C measurements
- Snug underbust
- 30–31 in · 76–79 cm
- Bust, fullest part
- about 33 in · 83–85 cm
- Cup difference
- 3 in (C 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.
30C sister sizes
Same cup volume, different band. If a 30C 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 30C doesn't fit
- Band rides up at the back
- Try 28D
- Band digs in, cups fit
- Try 32B
- Spilling over the cups
- Try 30D
- Cups gape or wrinkle
- Try 30B
Not sure what's wrong? Run through the 4-point fit check.
Compare 30C
Sizes next to 30C
30C questions
What is the sister size of 30C?
28D (one band down, one cup up) and 32B (one band up, one cup down). Sister sizes hold the same cup volume on a different band.
What is 30C in UK, Australian and European sizes?
UK 30C, Australia 8C, Europe 65C and France 80C. US and UK cup letters match up to DD and then split.
What measurements are a 30C?
A snug underbust of about 30–31 in (76–79 cm) and a bust of about 33 in (83–85 cm). Measure with the tape level and use the calculator for an exact result.
Is 30C a big size?
30C has a mid-range cup volume for a 30 band. Cup letters only mean something next to the band: a 30C holds the same as 28D or 32B.