What is 30 Bra Size? 30 Band Measurements, 30A to 30E Cup Sizes and Fit

A 30 bra size means a 30 band: your underbust measures about 25 to 26 inches (64 to 66 cm). On its own, "30" is not a complete bra size, because the cup letter decides how big the cup is. A 30A has a bust of about 31 inches and a 30E a bust of about 35 inches on the same band. Below is every 30 size with its measurements, how to find your cup, and sister sizes if the band does not feel right. Lovable India stocks 30 in every cup and style: see all 30 size bras.

30 bra size chart: 30A to 30E

Size	Bust (inches)	Bust (cm)	Bust minus band
30A	31	79	1 inch
30B	32	81	2 inches
30C	33	84	3 inches
30D	34	86	4 inches
30E	35	89	5 inches

Underbust for every row: 25 to 26 inches (64 to 66 cm). The band number is your underbust plus 4 (even number) or 5 (odd number), which is how bras are sized in India.

How to find your cup on a 30 band

Measure under your bust, snug, in inches. 25 or 26 means band 30.
Measure around the fullest part of your bust, loosely.
Subtract 30 from the bust measurement: 1 inch is 30A, 2 inches 30B, 3 inches 30C, 4 inches 30D, 5 inches 30E.

Example: underbust 25 inches and bust 32 inches is a 30B. Underbust 26 inches and bust 33 inches is a 30C. For the full method and sister sizes, use the bra size chart or the bra size calculator.

Which 30 sizes are most common in India?

30B and 30C are the most-sold 30 sizes on Lovable India, followed by 30D. 30A is common for slimmer frames and teenagers; 30E and above are usually bought in full-coverage and plus-size styles. 30 is the smallest band most brands stock; 30A and 30B are common for teenagers and petite women, and many who wear 30 could also wear 32 with one cup smaller.

30 sister sizes

If a 30 band is too tight, go up a band and down a cup: 30B becomes 32A, 30C becomes 32B, 30D becomes 32C. If a 30 band rides up and is loose, go down a band and up a cup: 30B becomes 28C, 30C becomes 28D. The cup volume stays the same in both directions.

30 vs 28 vs 32: what "30 size" actually tells you

People often search "30 size" meaning overall breast size, but the number is only the ribcage measurement. A 28D and a 30B have roughly the same cup volume on different bands; a 30B and a 32B have different cup volumes with the same letter. So two women who both wear "30" can look quite different, and a woman with a fuller bust on a small frame may be a 28D rather than a 30B. Measure both numbers rather than guessing from the band.

Best bra styles for 30 sizes

For 30A and 30B: t-shirt bras, lightly padded and push-up bras for shape, seamless bras under fitted tops. For 30C and 30D: full-coverage and 3/4th-coverage bras with wider straps; wired for lift, non-wired for all-day comfort. For 30E: full-coverage non-wired with side support and a 3-hook band. Browse t-shirt bras, padded bras, non-padded bras, sports bras and full coverage bras, then filter to your 30 size.

30 bra size FAQs

Is 30 a big bra size?

30 is a band measurement (underbust 25 to 26 inches), not a breast size. 30A is a small cup and 30E a large one on the same band. 30 is the smallest standard band; it is a small size by ribcage, whatever the cup.

What is 30 bra size in cm?

Underbust 64 to 66 cm. Bust depends on the cup: 30A about 79 cm, 30B 81 cm, 30C 84 cm, 30D 86 cm. European sizing calls the 30 band a 65.

What is the difference between 30B and 30C?

One inch of cup. 30B is for a bust of about 32 inches, 30C for 33 inches, on the same 25 to 26 inch underbust.

What is the difference between 30 and 32 bra size?

Two inches of band. 32 is for an underbust of 27 to 28 inches, 30 for 25 to 26 inches. If your usual 30 is tight, try 32 with one cup letter lower.

Which 30 bra is best for daily use?

A non-padded or lightly padded, non-wired, full-coverage cotton bra in your cup size. See 30 size bras on Lovable India from ₹179.

How do I know if I am a 30 or a 32?

Measure your underbust. 25 to 26 inches is 30; 27 to 28 inches is 32. If you are at 26 inches and between sizes, choose 32 with one cup smaller for a more comfortable band.

More bra size guides

Bra Size Chart | Bra Size Calculator | What A, B, C, D Cup Sizes Mean

By band: 32 Bra Size | 34 Bra Size | 36 Bra Size | 38 Bra Size

By size: 30B | 32B | 32C | 32D | 34B | 34C | 34D | 36B | 36C | 36D | 38B | 38C | 38D

By cup: A Cup | B Cup | C Cup | D Cup

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