According to our data, 1,28% of women in the United States, or 1738676 people, have this size. Among them: Hayley Williams, Saoirse Ronan, Jayma Mays. Below you will learn how size 30A differs from sizes 30AA, 32AA, 28A, 32A, 28B, 30B. Find out why it’s smaller than average.
How many inches and centimeters in 30A bra size
|Bust measurements (US+0\ UK+0)||30 – 33||76,2 – 83,8|
|Underbust measurements (US+0\ UK+0)||29 – 31||73,7 – 78,7|
|Bust (US+4\ UK+4)||26 – 29||66 – 73,7|
|Underbust (US+4\ UK+4)||25 – 27||63,5 – 68,6|
|Bra size (US+0\UK +0 system)||Cup diameter||Volume of one cup||Weight of both breasts|
|30A||8.9 cm (3+1/2 in)||184 cm3 (11 cu in)||0.33 kg (0.7 lb)|
Examples of what size 30A breasts look like in celebrities
1. Hayley Williams
2. Saoirse Ronan
3. Jayma Mays
30A VS other sizes
- vs 28A: The 28A bra has 2 inches less band. And the cup volume is slightly smaller.
- vs 32A: The 32A bra has 2 inches more band. And the cup volume is slightly larger.
- vs 30AA: The 30AA bra has the same band size. But the cup volume is smaller.
- vs 30B: The 30B bra has the same band size. But the cup volume is larger.
- vs 28B: It’s a sister size. The 28B bra has the same cup volume. But the band is a little tighter.
- vs 32AA: It’s a sister size. The 32AA bra has the same cup volume. But the band is a little looser.
30A sister size chart
|Sister size down||Current bra size||Sister size up|
Is 30A big, small or medium?
Both size 30A breasts weight 0.7 lbs (0.33 kg). The volume of one breast is 11 cubic inches (184 cm3). This is the volume and weight of 3,02% of women in the United States, or 4098307 people.
The number of women with smaller breasts is 1,41%. 30A is conventionally smaller than average size.
11,24% of women in the United States have a A cup size. 3,5% have a smaller cup size. The A cup size is conventionally smaller than the average cup size.
- EU (Europe) – 75AA
- FR/BE/ES – 90AA
- AU/NZ – 12AA
- JP/KO – 75AA
- IT – 3AA
- UK+0 – 30A
- UK+4 – 34AA
- US+4 – 34AA
- EU (Europe) – 65AA
- FR/BE/ES – 80AA
- AU/NZ – 8AA
- JP/KO – 65A
- IT – 1AA
- UK+0 – 26D
- US+0 – 26D
- UK+4 – 30A
What size sports bra for 30A
30A (US+0/UK+0 system) = XS
30A (US+4/UK+4 system) = M