What Size of Bra Do I Wear Calculator


Are you tired of constantly trying on bras and never finding the perfect fit? You’re not alone. Many women struggle to find the right size bra, but we bring a simple solution to this problem-use our bra size calculator.

Knowing the accurate bra size can be an issue for any woman. As women, we often wear tight bras or loose bras which are not good for us. 

Apart from being confident in the right bras, it will feel easy to wear, and comfortable. To achieve that, let’s get your accurate bra size for you. 

With the help of this calculator, it is easier to find the right bra and cup size.  

What does the ‘What Size Bra Do I Wear Calculator’ Do?

The “What Size Bra Do I Wear Calculator” is a tool that helps you determine your bra size by using your bust and band measurements. 

This calculator does all the hard parts of calculating your bra size for you. We all know it can be a hurdle sometimes to calculate, determine and get the right bra sizes due to miscalculations and the unavailability of standardized rules (well, that’s by the way).  You can avoid some of these mistakes by using our calculator to determine your bra size. 

Your bra size is accurately determined by the calculator based on your measurements. So, to get your most accurate bra size, make sure your measurements are correct. 

How does the Calculator work?

It’s quite easy to use! The calculator gets your estimated cup size and bra size after you input your bust and band measurements in the spaces provided. 

There are two available options for you to select from while calculating your bra size on our calculator; the UK style and the USA style. Both are slightly different when it comes to your cup and bra size. However, on our calculator, they are inputted in inches, so it’s best to read a tape rule in its inches while measuring your bust and band. 

These are all you need to get your actual size. Getting your actual bra size is as easy as that.Your bra size can change variably, depending on body changes and that’s why a bra size calculator is necessary. 

How to Measure your Band Size

Measuring your band size is the first step in determining your correct bra size using our calculator. The band size measurement is taken around your ribcage, just under your bust. It is important to ensure that the measuring tape is level and not too tight or too loose.

You can stand in front of a mirror to help you see the correct measurements and avoid mistakes. Although mistakes are inevitable, you can also remove your bra if you are wearing one as it will help you get more accurate measurements. 

Wrap a measuring tape around your ribcage, just under your bust. The tape should be level and should not be too tight or too loose. At the right ratio, remember to measure in inches and round to the nearest whole number if it happens to be a decimal.  

How to Measure your Cup Size

 Getting your cup size measurement can seem like a daunting task, but it’s quite simple and can be done at home with a measuring tape. 

Take a measuring tape and measure the fullest part of your bust. This is typically around the nipples. Make sure the tape measure is level around your body and is not too tight. This measurement will give you your bust size.

Naturally, to get your cup size, subtract your band size from your bust size. 

For example, if your band size is 34 inches and your bust size is 37 inches, your cup size would be a “C” (37-34=3 inches).

If you’re not so sure, make use of our calculator to get your bra size and cup size. 

The Differences Between UK Size and US Size

When it comes to bra sizes, the main difference between the UK and US styles is in the lettering. This can make it difficult to compare sizes between the two countries, as a 34B in the UK is not the same as a 34B in the US.

To make things even more confusing, different brands and manufacturers may have their unique sizing systems, following either the standard UK or US sizes. That’s why our calculator provides these two varying sizes to give you the accurate bra size depending on the sizing you want. 

What Sister Size Bras can I Wear

Your bra size can change depending on various factors such as weight loss or gain, pregnancy, and even the time of the month. This is where sister sizing comes in.

Sister sizing is when you try on a bra in a different size but keep the same cup volume. For example, if you typically wear a 34C, a sister size would be a 36B or a 32D. This allows you to find a bra that fits your cup volume but also fits comfortably around your band.

Here are a few sister size options for popular bra sizes:

If you wear a 34C, try a 36B or 32D

If you wear a 36B, try a 38A or 34C

If you wear a 32D, try a 34C or 30DD

Let’s Wrap it Up

Sister-size bras are important because in some cases, your bra size might be a bit smaller or bigger due to a company’s sizing. So it’s always a good idea to try on a few different sizes and styles to find the perfect fit. 

Sizing for band size can vary between brands, styles, and manufacturers. Since this band size varies, shopping from a particular brand might be an easy way out. Another easy way out is using our ‘What Size of Bra Do I Wear’ calculator to help you find the right fit no matter where you’re shopping. 

If you would like to find out your panty size, check out our Panty Size Calculator.