Bra Size Calculator

BH-Größenrechner Illustration

Calculate your accurate bra size online now

Tips on how to take the perfect measurements

  • Wear a T-shirt bra without padding.
  • Adjust the straps so that the tip of your breast – as seen from the side – is in the middle of the cup.
  • Have a friend help you with the measurements.

Step 1: Take your underbust measurement

1. Place the measuring tape flat against your skin – directly under your breasts. Make sure that the tape runs horizontally around your torso and is at the same height under your breast as on your back. Allow your arms to hang down naturally and breathe as usual.

2. Tighten the measuring tape a little and round the measurement up or down to the next full number. (Example: Round up to 37 inch if you have measured 36.8 inch or round down to 36 inch if the measurement shows 36.2 inch)

3. Move the slider to that position. 

 

 

Does My Bra Fit Properly?

Your checklist for the perfect fit.
If you can answer YES to all 6 questions, your bra fits properly.

 

 

1. Is your bra band snug without feeling too tight or too loose?

Signs of a poor fit include the band digging into your skin, creating bulges on your back, or riding up in the back.

2. Do your breasts fit comfortably inside the cups without spilling over or gaping?

The cups should fully contain your breasts without any spilling or bulging over the edges. They should also lie smoothly against your breasts without gaps or empty space.

3. Do your bra straps stay in place without digging into your shoulders?

Your bra straps should rest comfortably on your shoulders without leaving deep marks or indentations. They should also stay in place when you move, rather than constantly slipping off your shoulders.

4. Does your bra fit comfortably under your arms without digging in?

Your bra should sit smoothly under your arms without digging into your skin, creating uncomfortable pressure points, or causing bulging along the edges.

BH-Größenrechner Illustration

5. Does your bra band stay in place without riding up?

Your bra band should sit level and stay securely in place when you move. If you're wearing an underwire bra, the underwire should rest comfortably below your breasts without pressing into breast tissue.

6. Does the underwire follow the shape of your breasts without digging in?

The underwire should comfortably follow the natural curve of your breasts, including along the sides, without pressing into breast tissue or causing discomfort. 

 

Did you answer NO to any of the questions above? 

Find out how to fix common bra fit problems

 

SOLVE YOUR BRA FIT PROBLEMS

 

 

 

Fitting Guide

It's all about the fit. What you should look out for when buying and wearing a new bra and how to solve fit issues quickly and easily.     

Find your fit

Bra Finder

Which bra for which bust shape? Underwire bra, push-up with moulded cups, balconette or soft bra? Which style suits you best?    

  

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Lingerie Lexicon

Read our Lingerie Lexicon for everything you should know about materials and fabrics and the various bra types.    

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Frequently Asked Questions About Bra Sizing

How do I measure my bra size correctly?

Start by measuring your underbust: Wrap the measuring tape around your body directly under your bust, keeping it level and comfortably snug. Then measure around the fullest part of your bust without pulling the tape too tight. Stand upright and relaxed while measuring. Enter both measurements into the bra size calculator. Your calculated size is a good starting point for finding the right fit.

How can I tell if my bra fits correctly?

A well-fitting bra has a band that sits level around your body and does not ride up, even when you move. The cups should fully contain your breasts without digging in or gaping. The straps should rest comfortably on your shoulders. With an underwire bra, the underwire should follow the shape of your breasts without pressing into breast tissue. Most importantly, your bra should feel comfortable, even when you wear it for longer periods.

What should I do if my calculated bra size does not fit?

First, double-check your measurements and make sure the measuring tape was positioned correctly. If the band feels too tight or too loose, trying a different band size may help. You may also need to adjust the cup size accordingly. It can also be helpful to try different bra styles. The bra size calculator provides a starting point, but the actual fit can vary depending on the style, construction, and materials.

What are sister sizes and how do they work?

Sister sizes are bra sizes with different band sizes but approximately the same cup volume. For example, 34C, 32D, and 36B are sister sizes. If the band on a 34C feels too loose, you can try a 32D. If it feels too tight, a 36B may work better. The cup letter changes with the band size to maintain approximately the same cup volume. You should still check the overall fit of each bra.

Why does the same bra size fit differently in different styles?

Not every bra is constructed the same way. The shape of the cups, construction, materials, and amount of stretch can all affect the fit. The shape of the underwire can also make a difference. That is why one bra may fit perfectly in your usual size while another feels tight or has gaping or wrinkling in the cups. Trying different styles can help you find the ones that work best for your breast shape.

How often should I remeasure my bra size?

Your bra size can change over time. Changes in weight, pregnancy, breastfeeding, and hormonal fluctuations can all affect your measurements. Remeasure if your bras no longer fit the way they used to. It can also be helpful to check your measurements before buying new bras. There is no set schedule for remeasuring. What matters most is how well your current bra size fits.