Bra Cup Size Calculator (India)
Use your underbust and full bust measurements to get an estimated Indian bra size. This calculator follows common India/UK cup progression and gives sister sizes too.
How this bra size calculator works in India
Most Indian lingerie brands follow a size system very close to UK sizing: band sizes like 30, 32, 34, 36 and cup letters like A, B, C, D, DD, E, F. The calculator above does three things:
- Converts your measurements to inches if needed.
- Rounds your underbust to the nearest even band size.
- Calculates cup size from the bust-minus-band difference.
This gives you a practical starting point for online shopping, especially when a product page only lists standard India bra sizes.
How to measure bra size at home (India)
1) Underbust
Wrap a soft measuring tape directly under your bust, keeping it parallel to the floor. Pull snug, but not tight enough to dig into skin. Note the number.
2) Full bust
Measure around the fullest part of your bust. Keep the tape level and relaxed. Don’t compress breast tissue.
3) Use both measurements together
A lot of fitting errors happen because people guess only cup or only band. Always use both values for better accuracy.
Bra cup size chart (difference method)
Here is the general cup progression used in many Indian and UK-style brands. The “difference” means: Full Bust - Band Size.
| Difference (inches) | Approx. Difference (cm) | Cup Size |
|---|---|---|
| 0 | 0 | AA |
| 1 | 2.5 | A |
| 2 | 5.0 | B |
| 3 | 7.5 | C |
| 4 | 10.0 | D |
| 5 | 12.5 | DD / E (brand dependent) |
| 6 | 15.0 | E / F (brand dependent) |
| 7 | 17.5 | F / G (brand dependent) |
Understanding sister sizes
If your exact size is unavailable, sister sizing can help:
- Go down one band and up one cup (example: 34C → 32D)
- Go up one band and down one cup (example: 34C → 36B)
The cup volume stays similar, but the band feel changes. This is useful when inventory is limited in stores or during online sales.
Common fit problems and quick fixes
Band rides up at the back
Usually the band is too loose. Try one band size down and a cup size up.
Cups gape at the top
This may mean the cup is too large, or the bra style does not match your breast shape. Try one cup down or a different cup design (balconette, full coverage, T-shirt).
Spillage from cup edges
Often a sign that cup size is too small. Move up one or two cup sizes while keeping band support snug.
Straps digging into shoulders
Straps should support lightly; the band should do most of the work. If straps dig in, check band and cup combination first.
Important notes for Indian bra shoppers
- Different brands may use slightly different grading.
- Non-wired, sports, and padded bras can fit differently from regular wired bras.
- Maternity and feeding bras need extra flexibility in cup and band.
- Always check return/exchange policies when shopping online.
FAQ: bra cup size calculator india
Is this calculator accurate?
It is accurate as a starting estimate. Final fit depends on brand pattern, cup shape, fabric stretch, and bra style.
Should I measure in cm or inches?
Either works. The calculator converts automatically and gives a result in standard India sizing format.
How often should I re-measure?
Every 6-12 months, or after major weight change, hormonal changes, pregnancy, or postpartum transitions.
Final takeaway
Finding the right bra size is about comfort, posture, and confidence—not just a number. Use this bra cup size calculator India tool, then fine-tune with real fit checks and sister sizes. A good fit should feel secure, supportive, and natural for daily wear.