Bra Size Calculator

Cup sizes refer to the volume a bra cup can hold. As the cup size increases, so does the volume, meaning a D cup holds more than a C cup, and so on. Your cup size is determined by the difference between your bust measurement and your band size:

• A Cup – 1-inch difference
• B Cup – 2-inch difference
• C Cup – 3-inch difference
• D Cup – 4-inch difference

It’s important to note that cup volume also changes with band size. For example, a 34D and a 40D are not the same in volume—the 40D cup will be larger because it’s designed to fit a wider ribcage. This is why knowing your band size is just as important as your cup size to ensure the best fit and support.

For a detailed breakdown on cup sizes and visual comparison, check out our Complete Guide to Bra Cup: Comparing A, B, C, and D Cup Sizes..

For optimal comfort and support, a proper fit is essential. The band provides 90% of the support and should fit snugly around your ribcage without being too tight or riding up. The cups should fully encase your breasts without spillage or gaps, and the center panel should lie flat. Straps should rest comfortably on your shoulders without digging in or slipping.

There are different types of bras that every woman should know about: Shaping Bras, Wire-Free Bras, Convertible Bras, Bralettes, Sports Bras, Side Support Bras, Minimizer Bras, Strapless Bras, Underwire Bras, T-Shirt Bras and Nursing Bras.

You can learn more about the different types of bras and which one is the best option for you in this blog.

The best supportive bras give you the perfect blend of lift, comfort, and support without sacrificing style! Some key features you can look for include:

• Wireless or underwire designs: Go for what feels best! While underwire bras offer structured support, wireless bras have become the go-to choice for women who want to avoid pinching, digging, poking, and discomfort.
• Wide, adjustable straps: Help distribute weight evenly without digging in or slipping.
• Full-coverage cups: Offer a nice shape, prevent spillage, and provide secure support.
• Wide underband: A wider band ensures all-day support, enhances comfort, and smooths your sides and back for a seamless look.

Want more recommendations? Check out our expert picks in this guide.

Finding the right bra for your shape can enhance your natural silhouette while providing comfort and support. Every body is unique, and the perfect bra can help balance asymmetry, shape outward curves, lift a pendulous shape, or highlight a round bust. Let’s explore the best styles for every shape:

• Asymmetric
  If one breast is slightly larger than the other, don’t worry—it’s completely normal! Opt for bras with removable padding or inserts to even things out. Molded cup bras are a great choice, offering a smooth, symmetrical look. Adjustable straps also help fine-tune the fit to accommodate size differences.
  
  
• Wide-Set
  If your breasts naturally point outward, a T-shirt bra with light padding is your go-to. This style gently brings the bust toward the center, creating a balanced, flattering shape. Seamless cups also ensure a smooth silhouette, making them perfect for everyday wear.
  
  
• Bell-Shaped
  For breasts that are fuller at the bottom and taper toward the top, balconette or demi-cup bras offer the lift you need to create a rounded look. Styles with underwire provide extra support while enhancing your natural curves.
  
  
• Relaxed
  A more relaxed or pendulous shape benefits from full-coverage bras with strong support. Minimizer bras help create a lifted, flattering silhouette, while wide straps and bands ensure all-day comfort and stability.
  
  
• Round
  If your breasts are naturally round and full from top to bottom, most bra styles will suit you. T-shirt bras, bralettes, and seamless wireless bras provide lift and support without adding extra bulk.
  
  

Whatever your shape, the right bra can make all the difference. Find your perfect fit and embrace the comfort and confidence you deserve!

Wearing the wrong bra size or style can lead to discomfort and fit problems. Here are some of the most common issues and how to solve them:

• Spillage: If your bra cups don’t fully contain your breasts, try a wider band and fuller cups for better coverage and a more comfortable fit. Sizing up in the cup may also help, ensuring a smooth, supported fit. The Daily Comfort Wireless Shaper Bra and Sweetheart Wireless Contour Bra are great options for a flattering shape and full coverage.
  
  
• Quad Boob: If your bra cups dig into your bust, creating a bulging effect, it’s a sign that your cup size is too small. Sizing up in the cup or choosing a full-coverage bra can help create a smooth, seamless look. The Comfort Cotton Bralette and V-Neck Bralette are great options to prevent this.
  
  
• Uni-Boob: If your bra compresses your breasts into one shape without definition, opt for a bra with a contouring effect that provides lift, shape, and structure. The Supportive Comfort Wireless Shaping Bra creates a well-defined silhouette with modern foam cups and a wide band. The Wireless Lift T-Shirt Bra is another great choice to define your bust with molded cups.
  
  
• Bands Riding Up: If your bra band moves up your back, you may need a smaller band size for a snugger fit. The band should sit parallel to the ground and hug your ribcage comfortably. Start with the loosest hook when new to allow for natural stretching over time.
  
  
• Gaping Cups: If your bra cups gap, try sizing down or choosing bras with adjustable padding for a better fit. Opt for fuller-coverage styles designed for your breast shape to eliminate gaps and create a smooth silhouette.
  
  
• Straps Digging In or Slipping Off: Adjusting your strap length can help, but if straps still dig in, try wider or padded straps for extra comfort. If they keep slipping, check if your band is snug enough—a secure band helps distribute weight evenly. Convertible strap styles, like the Shapermint Essentials Smoothing Comfort Wireless Bra and the Supportive Comfort Wireless Shaping Bra offer a customizable fit.
  
  

Finding the right bra is all about comfort, support, and a perfect fit. Small adjustments can make a big difference!

Finding the right bra isn’t just about fit—it’s about function. Whether you’re looking for everyday comfort, extra support, or a sleek silhouette, there’s a bra designed to meet your needs.

Minimizer Bras – Perfect for achieving a sleek, streamlined look, minimizer bras redistribute breast tissue to reduce the bustline by up to two inches while maintaining support. Great for button-down shirts and tailored outfits, they offer full coverage and strategic seaming for a flattering fit.

Shop:
Bali® Passion Comfort Minimizer Underwire Bra
Lilyette® by Bali® Plunge Into Comfort Keyhole Minimizer® Bra

Sports Bras – Designed for low to medium-impact activities, sports bras provide essential support and minimize bounce, so you can stay focused on your workout. Look for moisture-wicking fabrics to keep you cool and adjustable straps for a customized fit—perfect for everything from jogging to yoga.

Shop:
Truekind® Seamless Racerback Sports Bra
Wacoal® Simone Sport Underwire Bra

Wirefree Bras – For all-day comfort without underwires, wirefree bras offer gentle support and a natural shape. Ideal for casual outings or relaxed days, these bras prioritize soft fabrics and seamless designs for a barely-there feel that still provides the support you need.

Shop:
Truekind® Enhanced Comfort Wireless Shaper Bra
Truekind® Supportive Comfort Wireless Shaping Bra

Side Support Bras – If you struggle with side spillage, side support bras provide extra shaping with reinforced panels that keep breast tissue centered for a lifted, contoured look. Wider bands and adjustable straps ensure a secure and comfortable fit that enhances your natural shape.

Shop:
Wacoal® Ultimate Side Smoother Contour Bra
Shapermint Essentials Smoothing Comfort Wireless Bra

A bra typically lasts 6 to 12 months depending on usage and care. Replace it if the band feels loose, cups lose shape, or straps fail to adjust. Wash in cold water with a mesh bag and rotate bras regularly to extend lifespan.