Bra Size Calculator
Use this calculator to estimate your bra size based on your measurements. For best results, measure while wearing a non-padded bra or no bra at all.
Measure snugly around your rib cage, directly under your bust. Exhale fully to get the smallest measurement.
Measure loosely around the fullest part of your bust, keeping the tape level across your back.
Your Estimated Bra Size:
Understanding Your Bra Size: A Comprehensive Guide
Finding the right bra size is crucial for comfort, support, and even your posture. Many women wear the wrong size, leading to discomfort, back pain, and an unflattering fit. Our Bra Size Calculator helps you get an accurate estimate from the comfort of your home.
Why Accurate Bra Sizing Matters
- Comfort: A well-fitting bra won't dig into your shoulders or back, nor will it ride up.
- Support: The band, not the straps, should provide most of the support, preventing sagging and reducing strain.
- Appearance: The right bra can enhance your silhouette, making clothes fit better and boosting confidence.
- Health: Proper support can alleviate back, neck, and shoulder pain, especially for those with larger busts.
How to Measure for Your Bra Size
For the most accurate results, measure yourself while wearing a non-padded bra or no bra at all. Use a soft measuring tape and stand in front of a mirror if possible.
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Band Measurement (Underbust):
Wrap the measuring tape snugly around your rib cage, directly under your bust. Make sure the tape is level all the way around your back. Exhale fully to get the smallest possible measurement. This measurement is the foundation for your band size.
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Bust Measurement (Overbust):
Wrap the measuring tape loosely around the fullest part of your bust. Again, ensure the tape is level across your back. Do not pull the tape too tight; it should rest gently on your skin without compressing your breast tissue. This measurement helps determine your cup size.
How Our Calculator Works
Our calculator uses a common method to determine your bra size:
- Band Size: Your underbust measurement is rounded to the nearest even number. For example, if your underbust is 31 inches, your band size will likely be 30. If it's 32.5 inches, it will be 32.
- Cup Size: The difference between your bust measurement and your calculated band size determines your cup letter. Each inch of difference typically corresponds to one cup size (e.g., 1 inch = A cup, 2 inches = B cup, 3 inches = C cup, and so on).
Important Considerations
- Bra Brands Vary: Just like clothing, bra sizes can differ slightly between brands. Your calculated size is a great starting point, but you might need to try a few different brands to find your perfect fit.
- Body Changes: Your bra size can change due to weight fluctuations, pregnancy, breastfeeding, or hormonal shifts. It's a good idea to re-measure yourself periodically.
- Sister Sizes: If your calculated size doesn't feel quite right, you might explore "sister sizes." These are bra sizes with the same cup volume but different band sizes (e.g., a 34B has a similar cup volume to a 32C or a 36A).
- Professional Fitting: While this calculator provides a strong estimate, a professional bra fitting expert can offer personalized advice and help you find the absolute best fit.
Use the calculator above to get started on your journey to a more comfortable and supportive bra!