Bra Size Calculator – Find Your Perfect Fit
Finding the right bra size is crucial for comfort and support. Our free bra size calculator helps you determine your correct measurements. Most women wear the wrong bra size without realizing it.
A well-fitting bra improves posture and confidence. It prevents back pain and shoulder strain. Our calculator uses professional fitting methods to ensure accuracy.
How to Measure for Bra Size
Accurate measurements are essential for finding your perfect bra size. Measure yourself without a bra for best results. Use a soft measuring tape that sits flat against your skin.
Band Size Measurement
Wrap the measuring tape around your ribcage, just under your bust. Keep the tape level and snug but not tight. Round to the nearest half inch. This measurement determines your band size.
Cup Size Measurement
Measure around the fullest part of your bust. Keep the tape level across your back. The difference between bust and band measurements determines your cup size. Each inch difference represents one cup size.
International Size Conversion
Bra sizes vary significantly between countries and regions. Our calculator provides conversions for major sizing systems worldwide. Understanding these differences helps when shopping internationally.
| US/UK | European | French | Australian | Japanese |
|---|---|---|---|---|
| 28 | 60 | 75 | 6 | 60 |
| 30 | 65 | 80 | 8 | 65 |
| 32 | 70 | 85 | 10 | 70 |
| 34 | 75 | 90 | 12 | 75 |
| 36 | 80 | 95 | 14 | 80 |
| 38 | 85 | 100 | 16 | 85 |
| 40 | 90 | 105 | 18 | 90 |
| 42 | 95 | 110 | 20 | 95 |
Cup Size Variations
Cup sizes also differ internationally. Some regions use double letters differently. Japanese sizing often runs smaller than Western standards. Always check brand-specific sizing charts when possible.
Understanding Bra Sizes
Bra sizes consist of a band size and cup size. The band provides most of the support. Cup sizes increase with each inch difference from the band measurement.
| Difference (inches) | Cup Size | Difference (inches) | Cup Size |
|---|---|---|---|
| 1″ | A | 6″ | F |
| 2″ | B | 7″ | G |
| 3″ | C | 8″ | H |
| 4″ | D | 9″ | I |
| 5″ | DD/E | 10″ | J |
Signs of a Well-Fitting Bra
- Band sits level around your torso
- Cups contain all breast tissue without spillage
- Center gore lies flat against your chest
- Straps provide support without digging
- You can fit two fingers under the band
- No back bulging or rolling
Common Fitting Problems
Many women experience fitting issues due to incorrect sizing. Cups that are too small cause spillage and discomfort. Bands that are too loose provide inadequate support.
Straps that dig into shoulders indicate a loose band. The band should provide 80% of the support. Gaping cups suggest the wrong cup shape or size.
When to Get Re-measured
Your bra size can change due to weight fluctuations, hormones, or age. Get measured every six months for optimal fit. Pregnancy and breastfeeding significantly affect sizing.
Athletic activities and lifestyle changes also impact measurements. Professional fittings complement home measurements for best results. Different brands may fit differently despite same sizing.
Tips for Bra Shopping
Shop for bras in the afternoon when your body is at its largest. Try multiple sizes around your calculated size. Different styles fit differently even in the same size.
Quality matters more than quantity in bra selection. Invest in well-made bras that provide proper support. Replace bras every 6-12 months depending on wear frequency.
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FAQs about Free Bra Size Calculator
How accurate is the bra size calculator?
Our calculator uses professional fitting methods and is highly accurate for most women. However, it’s an estimate – we recommend trying on bras as fit can vary between brands and styles.
What’s the difference between US and European bra sizes?
European band sizes are about 15 numbers higher than US sizes (US 34 = EU 75). Cup sizes are similar, but Europeans use single letters (E) instead of double letters (DD).
How often should I measure my bra size?
Measure every 6 months or after weight changes of 10+ pounds. Hormonal changes, pregnancy, and aging also affect bra size, so regular measuring ensures proper fit.
Why do I get different sizes with different brands?
Bra sizing isn’t standardized between brands. A 34C in one brand may fit like a 36B in another. Always check brand-specific size charts and try before buying.
Can I use centimeters instead of inches?
Yes! Our calculator supports both centimeters and inches. Simply select “Centimeters” from the measurement system dropdown and enter your measurements in cm for accurate results.
