US Bra Size Calculator
Enter your measurements below to calculate your estimated bra size and get personalized brand recommendations. This calculator provides results based on US sizing standards.
Your Bra Size Is:
These sizes may also fit you.
Top Brands for Your Size
Discover brands perfectly sized and styled for *you*!
Disclaimer: This calculator provides an *estimated* bra size. Actual fit can vary significantly based on brand, style, and individual body shape. It's *highly recommended* to try on bras in person or use a brand's specific sizing guide for the most accurate fit. We may earn a commission from purchases made through links on this site.
Finding the right bra size isn’t just about comfort all day—it’s about confidence, posture, and enhancing your natural mode. At Brasizecalculator.us, we empower you to say goodbye to ill-fitting bras and hello to a flawless fit with our easy-to-use bra size calculator. Whether you’re shopping for everyday wear Bra, sports Bra, or a special occasion Bra, our tool ensures precision and simplicity.
Why Your Bra Size Matters
Wearing the wrong bra size can lead to discomfort, back pain, and even skin irritation. A poorly fitted bra may also affect your posture and how clothing drapes on your body. Studies show that over 80% or more of women wear the incorrect bra size, often due to outdated measuring methods and about sizing charts. Our calculator eliminates the guesswork, providing personalized results tailored to your body’s unique measurements.
How to Measure Your Bra Size in 3 Simple Steps
Measure Your Band Size
- Use a soft measuring tape to wrap snugly around your ribcage, just below your bust. Ensure the tape is parallel to the floor and not too tight.
- Note the measurement in inches or centimeters. If it’s an odd number, round up to the nearest even number (e.g., 33 inches becomes 34).
Determine Your Bust Size
- Measure around the fullest part of your bust, keeping the tape gently snug. Avoid padded bras for accuracy.
Calculate Your Cup Size
Subtract your band size from your bust size. Each inch/cm difference corresponds to a cup letter:
1” (2.5 cm) = A | 2” (5 cm) = B | 3” (7.6 cm) = C | 4” (10 cm) = D | … and so on.
Example: Band size = 34”, Bust size = 37”. The 3” difference means a 34C.
Why Choose Our Bra Size Calculator?
✅ Instant, Accurate Results
Our algorithm accounts for global sizing standards (US) and brand-specific variations, ensuring your result translates seamlessly to real-world shopping.
✅ Sister Sizes & Style Recommendations
Discover alternative “sister sizes” (e.g., 34C ↔ 36B) for flexibility, plus tailored suggestions for balconette, sports, or push-up bras based on your shape.
✅ Trusted Brand Compatibility
Get size conversions for top brands like Wacoal, Panache, Savage x Fenty, and ThirdLove, so you shop with confidence.
✅ Mobile-Friendly & Secure
Measure your size anytime, anywhere. We prioritize your privacy—no data stored.
Avoid Common Bra Fitting Mistakes
- Don’t Measure Over Clothes: Wear a non-padded bra or measure bare for precision.
- Check the Mirror: Ensure the measuring tape isn’t twisted or sagging.
- Update Regularly: Weight changes, pregnancy, or aging can alter your size. Re-measure every 6–12 months.
Bra Size Conversion Chart
| Difference in (cm) | US Size |
|---|
| <1 | AA |
| 1 (2.5) | A |
| 2 (5.1) | B |
| 3 (7.6) | C |
| 4 (10.2) | D |
| 5 (12.7) | DD/E |
| 6 (15.2) | DDD/F |
| 7 (17.8) | DDDD/G |
| 8 (20.3) | H |
| 9 (22.9) | I |
| 10 (25.4) | J |
| 11 (27.9) | K |
| 12 (30.5) | L |
| 13 (33.0) | M |
| 14 (35.6) | N |
| 15 (38.1) | O |
| 16 (40.6) | P |
| 17 (43.2) | Q |
| 18 (45.7) | R |
Explore our full chart for international conversions.
Top Bra Brands for Your Perfect Fit
- Wacoal: Renowned for precision and support.
- Panache: Ideal for fuller busts and stylish designs.
- ThirdLove: Half-cup sizes for a customized fit.
- Savage x Fenty: Trendy options for all body types.
FAQs
Q: How often should I measure my bra size?
A: We recommend checking every 6 months or after significant weight changes.
Q: Can I use centimeters instead of inches?
A: Yes! Our calculator supports both units.
Q: Why do bra sizes vary by brand?
A: Sizing standards differ globally. Our tool adjusts for these variations.
Q: What if my size isn’t available in stores?
A: Try sister sizes or explore our recommended online retailers.
Embrace Confidence with the Right Fit
A well-fitted bra lifts your posture, enhances curves, and eliminates discomfort. At Brasizecalculator.us, we’re committed to helping you find your perfect size in minutes. Say goodbye to awkward adjustments and hello to all-day comfort.
📏 Ready to Transform Your Wardrobe?
Visit Brasizecalculator.us today—your journey to confidence starts here!
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