A bra size calculator takes the trial and error out of finding your perfect fit. After all, a bra’s job isn’t just to look pretty. It should be comfortable, give you the right amount of support, and boost your confidence. Yet many women wear the wrong size without even realising it. That’s where the wardrobe woes start. Clothes don’t sit right, straps dig and back pain becomes a constant companion. No wonder the best part of their day is imagining the moment when they can finally take it off!
With a bra size calculator, you can quickly measure and find your correct size, from the comfort of your home. No more awkward in-store measurements and that feeling like all eyes are on you. The calculator walks you through simple steps, then matches your numbers to the ideal band and cup size for your body. The best part? A bra that sits just right, not too tight and not too loose. Smooth, feel-good silhouette under any outfit becomes your normal.
How to Measure Bra Size for the Perfect Fit
Finding the right bra size is easier than you think. To know how to measure bra size, grab a measuring tape, find the nearest mirror, and follow these simple steps:
Step 1: Calculate Band Size (Underbust)
• Stand straight and wrap the measuring tape snugly around your ribcage, right under your bust.
• Make sure the tape sits straight and feels secure, not suffocating.
• Note the measurement in inches.
• If it’s an odd number, round up to the nearest even number. That will be your band size.
Example: If you measure 31 inches, your band size will be 32.
Step 2: Calculate Cup Size (Overbust)
• Wrap the measuring tape around the fullest part of your bust. Keep it straight and relaxed.
• Subtract your band size from this bust measurement.
• Each inch of difference equals a cup size (1 inch = A, 2 inches = B, 3 inches = C, and so on).
Example:
Bust = 36 inches, Band = 32 inches
Difference = 4 inches
Cup size = D
Bra Size Calculator
Getting your measurements right can make a world of difference. Find your fit in seconds with our bra size calculator.
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Watch this Video on How to Check Bra Size
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How to Know if a Bra Fits Perfectly
What the Right Cup Fit Looks Like
Your cups should feel smooth, secure, and offer the right amount of coverage. No odd-looking gaps or spillage drama.
• Cups should sit smoothly against your bust with no gaps or bulges.
• The fabric should gently hug without squeezing or wrinkling.
• Your bust should be fully contained. The centre gore should lie flat against your chest.
• If you see spillage or empty space, the size isn’t right.
What the Right Band Fit Looks Like
• The band should feel snug and supportive, sitting level across your back.
• You should be able to slide two fingers underneath comfortably.
• If it rides up or feels too tight, the band size needs adjusting.
What the Right Straps Fit Looks Like
• Straps should rest comfortably on your shoulders.
• You should be able to fit a finger between the strap and your skin.
• The straps are there to keep the cups in place, not to carry all the support. The latter is the band’s job. So, make sure they’re not pressed against your skin.
• If they’re constantly slipping or causing red marks, the adjustment or size may be off.
Do’s & Don’ts for Taking Correct Measurements
The first step to finding the perfect bras is getting your measurements right. Whether you’re using a bra size calculator or learning how to measure bra size yourself, these tips will help you make the right pick:
Do’s
Follow these simple steps to get the most accurate result:
• Wear a lightly padded or non-padded bra while measuring.
• Stand tall with shoulders relaxed for a natural posture.
• Use a soft, flexible measuring tape for a comfortable and precise measurement.
• Keep the tape level all the way around your body.
• Measure twice to double-check your numbers before entering them in a bra size calculator.
Don’ts
Avoid these common mistakes that can throw off your measurements:
• Don’t measure over thick clothing or bulky layers.
• Don’t pull the tape too tight or let it hang too loose.
• Don’t slouch or raise your arms while measuring.
• Don’t ignore differences between underbust and overbust measurements, both matter equally.
• Don’t guess your size when a quick calculation can give you the perfect fit.
Detailed Bra Size Chart for Indian Body Types
Every body is different, and so is every bra. Now that you know how to measure bra size, here’s a detailed chart to help you find your right fit:
Bra size chart (in inches)
| Your Size |
Band Measurement (Inches) |
Overbust Size (Inches) |
| 30A | 29.5 - 31 | 30 - 31 |
| 30B | 29.5 - 31 | 31 - 32 |
| 30C | 29.5 - 31 | 32 - 33 |
| 30D | 29.5 - 31 | 33 - 34 |
| 30DD | 29.5 - 31 | 34 - 35 |
| 30DDD | 29.5 - 31 | 35 - 36 |
| 32AA | 31.5 - 33.5 | 31 - 32 |
| 32A | 31.5 - 33.5 | 32 - 33 |
| 32B | 31.5 - 33.5 | 33 - 34 |
| 32C | 31.5 - 33.5 | 34 - 35 |
| 32D | 31.5 - 33.5 | 35 - 36 |
| 32DD | 31.5 - 33.5 | 36 - 37 |
| 32G | 31.5 - 33.5 | 38 - 39 |
| 34AA | 33.5 - 35.5 | 33 - 34 |
| 34A | 33.5 - 35.5 | 34 - 35 |
| 34B | 33.5 - 35.5 | 35 - 36 |
| 34C | 33.5 - 35.5 | 36 - 37 |
| 34D | 33.5 - 35.5 | 37 - 38 |
| 34DD | 33.5 - 35.5 | 38 - 39 |
| 34DDD | 33.5 - 35.5 | 39 - 40 |
| 34G | 33.5 - 35.5 | 40 - 41 |
| 36AA | 35.5 - 37.5 | 35 - 36 |
| 36A | 35.5 - 37.5 | 36 - 37 |
| 36B | 35.5 - 37.5 | 37 - 38 |
| 36C | 35.5 - 37.5 | 38 - 39 |
| 36D | 35.5 - 37.5 | 39 - 40 |
| 36DD | 35.5 - 37.5 | 40 - 41 |
| 36G | 35.5 - 37.5 | 43 - 44 |
| 38A | 37.5 - 41.5 | 39 - 42 |
| 38B | 37.5 - 41.5 | 40 - 43 |
| 38DD | 37.5 - 41.5 | 43 - 46 |
| 38G | 37.5 - 41.5 | 46 - 47 |
| 40A | 41.5 - 43.5 | 43 - 44 |
| 40B | 41.5 - 43.5 | 44 - 45 |
| 40C | 41.5 - 43.5 | 45 - 46 |
| 40D | 41.5 - 43.5 | 46 - 47 |
| 40DD | 41.5 - 43.5 | 47 - 48 |
| 40DDD | 41.5 - 43.5 | 48 - 49 |
| 40G | 41.5 - 43.5 | 49 - 50 |
| 42A | 43.5 - 45.5 | 45 - 46 |
| 42B | 43.5 - 45.5 | 46 - 47 |
| 42C | 43.5 - 45.5 | 47 - 48 |
| 42D | 43.5 - 45.5 | 48 - 49 |
| 42DD | 43.5 - 45.5 | 49 - 50 |
| 42DDD | 43.5 - 45.5 | 50 - 51 |
| 42G | 43.5 - 45.5 | 51 - 52 |
| 44C | 45.5 - 47.5 | 48 - 49 |
| 44D | 45.5 - 47.5 | 49 - 50 |
| 44DD | 45.5 - 47.5 | 50 - 51 |
| 44DDD | 45.5 - 47.5 | 51 - 52 |
Bra Size Calculator - Frequently Asked Questions
What is the difference between cup size & bra size?
Bra size combines two measurements: the band (underbust) and cup (bust difference). Cup size shows breast volume (A, B, C…), while bra size includes the band number (e.g., 34B). You can use an Indian bra size calculator in inches to get both right.
What are sister sizes?
Sister sizes are alternate bra sizes with the same cup volume but different band sizes. For example, 34B’s sisters are 32C and 36A. A bra sister size calculator can help you find them if your perfect size isn’t in stock.
How to make your bra last as long as possible?
Hand wash with mild detergent, avoid wringing and air-dry in shade. Rotate bras instead of wearing the same daily. Get the right fit from a bra size calculator India to ensure less stretching and that your bra stays supportive longer.
Is my bra size the same in all brands?
Not always. Sizing varies between brands and countries. A 34C in one label might feel different in another. Use an Indian bra size calculator in inches or cm before switching brands to get a comfortable, consistent fit.
How do I calculate my bra size manually?
Measure your underbust snugly for band size, then your fullest bust for cup size. Subtract underbust from bust; each inch equals a cup size. This simple “how to calculate bra size with bust and underbust” method works at home.
Is there a difference between calculating and checking bra size?
Yes. Calculating involves measurements (bust & underbust) via a bra cup size calculator. Checking means trying on a bra to see if straps, cups and band fit well. Ideally, both methods are helpful in measuring the bra size.
