Bra Size Calculator
The bust size is the loose circumference measured around the chest over the fullest part of the breasts.
The band or frame size is the firm circumference, fitted not tightly, measured directly underneath the breasts.
Bra Size Converter
Convert bra sizes between different international sizing standards.
Find Your Perfect Fit with Our Accurate Bra Size Calculator
Wearing the right bra size isn’t just about comfort—it’s about confidence, posture, and overall well-being. Yet, studies show that a vast majority of women are wearing the wrong bra size.
This can lead to discomfort, pain, and even long-term health issues. That’s why we’ve developed a highly reliable and easy-to-use bra size calculator that helps you find the perfect fit every time.
You can check our other calculators to calculate different things.
Why Correct Bra Sizing Matters
An ill-fitting bra can ruin your entire day. From strap marks and shoulder pain to constant readjustments and backaches, the consequences of wearing the wrong bra are numerous.
More seriously, wearing the wrong size over time can cause long-term effects on your posture, skin, and even breast tissue. Our bra size calculator is here to change that.
Our tool takes into account your band and bust measurements and gives you the most accurate sizing possible. The importance of correct sizing cannot be overstated—it can drastically improve your comfort and confidence.
Common Signs You’re Wearing the Wrong Bra Size
Many women are not even aware they’re wearing the wrong bra size. Here are a few tell-tale signs:
Red marks on your shoulders or underbust
The back band rides up
Gaping or spilling over the cups
Straps that dig in or fall off constantly
The center panel does not lie flat against the sternum
If you experience any of these issues, it’s a strong indicator that you need to recalculate your size using a reliable bra size calculator.
How Our Bra Size Calculator Works
Our bra size calculator is designed to be simple and intuitive. All you need are two key measurements: your band size and your bust size. Here’s a breakdown:
Step 1: Measure Your Band Size
Wrap a measuring tape snugly around your rib cage, directly under your bust. Make sure the tape is level all the way around. Round to the nearest whole number. If it’s even, add 4. If it’s odd, add 5. This gives you your band size.
Step 2: Measure Your Bust Size
Wrap the measuring tape around the fullest part of your bust. Ensure the tape is not too tight or too loose. Round to the nearest whole number.
Step 3: Calculate Your Cup Size
Subtract your band measurement from your bust measurement. The difference determines your cup size:
1 inch = A cup
2 inches = B cup
3 inches = C cup
And so on…
Using our bra cup size calculator, you can input your measurements, and it will automatically determine your correct size.
Designed for All Body Types
Our bra size calculator UK is designed to be inclusive. We understand that every body is different. Whether you’re petite, plus-sized, or somewhere in between, our tool accommodates a wide range of measurements. It’s suitable for teenagers, adults, and seniors alike.
We’ve also taken into account the inconsistencies across different manufacturers. A 34B in one brand may not fit the same as another. That’s why our bra size calculator M&S reference helps match common UK sizing standards, making shopping easier.
Measuring in Inches
Prefer to measure in inches? No problem. Our bra size calculator in inches gives you the flexibility to choose your measurement units. This is especially useful for those in the UK or US who are more familiar with imperial units. Just input your figures, and our calculator does the rest.
Why Standard Bra Sizing Fails
One of the biggest challenges in finding the right bra size is the lack of standardization. Sizes can vary widely between countries and even between brands. This lack of consistency is frustrating and can make it difficult to shop online or even in-store. That’s why our bra size calculator is such a game-changer.
Our tool is constantly updated to reflect changes in brand sizing charts, ensuring you get the most up-to-date and accurate size recommendation possible.
How to Calculate Bra Size Manually
Although our tool simplifies the process, it’s helpful to understand how to calculate bra size manually:
Measure under the bust to get the band size
Measure around the fullest part of the bust
Subtract the band from the bust measurement
Use the difference to determine cup size
If you’re ever unsure, let our calculator do the math for you.
How to Calculate Bra Cup Size
Just as important as the band is the cup. Learning how to calculate bra cup size is crucial. A common mistake is wearing a band that’s too big and a cup that’s too small. Our tool corrects this by taking both into account and cross-referencing them with industry-standard charts.
Trusted by Thousands
Thousands of women across the UK and beyond trust our bra size calculator UK to give them accurate and reliable sizing. We’ve also integrated sizing references from popular stores like Marks & Spencer, making it easy to use our bra size calculator M&S option when shopping.
FAQs
1. Can I use this tool if I’m pregnant or breastfeeding? Yes, but keep in mind that breast size can change significantly. It’s recommended to measure more frequently during this period.
2. Is it normal for my bra size to change? Absolutely. Weight fluctuations, hormonal changes, and age can all affect your bra size. Use our bra size calculator every few months to stay on top of your measurements.
3. What if my measurement falls between two sizes? In such cases, we recommend trying both sizes or opting for the larger size for more comfort.
Final Thoughts
Finding the right bra size can be life-changing. With our advanced and user-friendly bra size calculator, you’ll never have to second-guess your fit again. Whether you’re new to measuring or simply looking for a better tool, we’ve got you covered.
From measuring in inches to understanding how to calculate bra size and how to calculate bra cup size, everything you need is right here. Our calculator is built with care, expertise, and above all, your comfort in mind.
Don’t let an ill-fitting bra ruin your day. Use our bra size calculator today and discover the perfect fit just for you.
