C Cup Size Guide
C cup is a medium cup size with a 3-inch bust-band difference. It's one of the most common and widely available sizes, offering excellent style variety.
Quick Facts: C Cup
Bust-Band Difference
3 inches (7.5 cm)
Approx. Volume (34 band)
~300-400 ml
UK Equivalent
C
EU Equivalent
C
Common C Cup Sizes
C Cup Works Best For
- ✓Average to fuller frames
- ✓Professional wardrobe needs
- ✓Balanced proportions
- ✓Variety of activities
Common Challenges
- !Finding the perfect fit between brands
- !Some bras may create too much cleavage for work
Best Bra Styles for C Cup
Sister Sizes for C Cup
Sister sizes have the same cup volume with different band sizes. If your band feels too tight or loose, try a sister size.
Tighter Band
32D
Your Size
34C
Looser Band
34B
Frequently Asked Questions: C Cup
Is C cup considered medium or large?
C cup is generally considered a medium cup size. It's proportionally balanced for many body types and offers the widest range of style options.
What is the most common bra size?
34C has historically been cited as the most common US bra size, though accurate fitting suggests many women actually wear different sizes than they think.
How much does a C cup weigh?
On a 34 band, C cups typically weigh around 300-400 grams (0.7-0.9 lbs) per breast, though this varies based on density and tissue composition.
Find Your Perfect C Cup Bra
Use our calculator to confirm your size and get personalized recommendations.