Size Guide
30C Bra Size
Everything you need to know about bra size 30C — measurements, sister sizes, international equivalents, and fit advice.
Measurements for 30C
Underbust (Band)
29 to 31 inches (74 to 79 cm)
Full Bust
approximately 34 inches (86 cm)
30C in Other Sizing Systems
US
30C
UK
30C
EU
65C
FR
80C
AU
8C
Sister Sizes for 30C
These sizes have the same cup volume as 30C. Try them if the band feels too tight or too loose.
28D ↔ 30C ↔ 32B
← Tighter band, bigger cup · Looser band, smaller cup →
Fit Tips for 30C
C cups work well in most bra styles. If you experience spillover in one brand but not another, cup shapes vary — try different styles.
If your 30C bra is gapping at the top of the cup, the cup may be too large or the wrong shape — try a demi-cup or balconette. If the center gore doesn't sit flat, go up one cup size.
Not sure about your size? Measure yourself and double-check.
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