Bra Calculator - Quick & Easy Bra Size Tool
🚀 Quick & Easy
Our bra calculator provides instant results with both quick presets and detailed measurement options for perfect sizing.
🌍 International Sizes
Get your bra size in US, UK, EU, and French sizing systems with sister sizes for alternative fitting options.
⚡ Professional Algorithm
Our bra calculator uses professional fitting algorithms to ensure accurate size calculations based on your measurements.
🩱 Bra Calculator
Find your perfect bra size in seconds
Quick Size Estimate
What is a Bra Calculator?
A bra calculator is a specialized tool designed to help women determine their correct bra size using precise measurements. Our bra calculator uses professional fitting algorithms to convert your under bust and full bust measurements into accurate bra sizes across multiple international sizing systems. This bra calculator eliminates the guesswork from bra shopping and ensures you find the perfect fit every time.
The bra calculator takes into account the complex relationship between band size and cup size, providing not just your primary size but also sister sizes that might offer better comfort. Our advanced bra calculator supports measurements in both inches and centimeters, making it accessible to users worldwide.
How to Use Our Bra Calculator
Measure Your Under Bust
Using a soft measuring tape, measure around your ribcage just under your breasts. Keep the tape snug but not tight. This measurement determines your band size in our bra calculator.
Measure Your Full Bust
Measure around the fullest part of your bust, keeping the tape parallel to the ground. This measurement, combined with your under bust measurement, allows our bra calculator to determine your cup size.
Input Your Measurements
Enter your measurements into our bra calculator. You can use either inches or centimeters - the bra calculator will automatically convert and calculate your size in multiple international systems.
Get Your Results
Our bra calculator will provide your size in US, UK, EU, and French sizing systems, plus sister sizes for alternative fitting options. Use these results when shopping for bras online or in-store.
Benefits of Using Our Bra Calculator
Accurate Sizing
Our bra calculator uses professional fitting algorithms to ensure precise size calculations based on your unique measurements.
International Compatibility
Get your bra size in US, UK, EU, and French sizing systems with our comprehensive bra calculator.
Quick & Easy
Our bra calculator provides instant results with both quick presets and detailed measurement options.
Sister Sizes
The bra calculator provides alternative sister sizes for better comfort and fit options.
Frequently Asked Questions
How accurate is this bra calculator?
Our bra calculator uses industry-standard measurement techniques and professional fitting algorithms. While it provides highly accurate results, we recommend trying on bras before purchasing, as fit can vary between brands and styles. The bra calculator serves as an excellent starting point for finding your correct size.
What if I'm between sizes in the bra calculator?
If your measurements fall between sizes, our bra calculator will recommend the closest size and provide sister sizes as alternatives. Sister sizes have the same cup volume but different band sizes, giving you more options for comfort and fit.
Can I use this bra calculator for sports bras?
Yes! Our bra calculator works for all types of bras, including sports bras. However, sports bras often have different sizing conventions (like S, M, L), so use our bra calculator results as a reference point when checking brand-specific sizing charts.
How often should I use a bra calculator?
We recommend using our bra calculator whenever you notice changes in fit, weight fluctuations, or at least every 6-12 months. Body measurements can change due to various factors, and regular use of a bra calculator ensures you're always wearing the correct size for optimal comfort and support.
Does the bra calculator work for all body types?
Our bra calculator is designed to work for all body types and sizes. The algorithm accounts for various proportions and provides accurate sizing across the full spectrum of bra sizes. Whether you have a smaller or fuller bust, the bra calculator will provide reliable sizing recommendations.
Professional Bra Fitting Tips
📏 Measuring Best Practices
- Measure yourself wearing a non-padded, well-fitting bra or no bra at all
- Keep the measuring tape parallel to the ground and snug but not tight
- Take measurements at the end of the day when your body is at its largest
- Have someone help you measure for the most accurate results
🛍️ Shopping with Your Bra Calculator Results
- Always check brand-specific sizing charts as sizes can vary between manufacturers
- Consider trying sister sizes if your calculated size doesn't feel quite right
- Remember that different bra styles may fit differently even in the same size
- When shopping online, read reviews for fit guidance from other customers
✅ Signs of a Good Fit
- The band sits level around your body and doesn't ride up in the back
- The center gore (front part) lies flat against your chest
- The cups fully contain your breast tissue without spillage or gaps
- The straps provide support without digging into your shoulders
How Our Bra Calculator Works
Our bra calculator uses a sophisticated algorithm that takes into account the mathematical relationship between band size and cup size. The bra calculator first determines your band size by rounding your under bust measurement to the nearest even number (in inches) or using the direct measurement (in centimeters).
The cup size calculation in our bra calculator is based on the difference between your full bust and under bust measurements. Each inch of difference typically corresponds to one cup size (A=1", B=2", C=3", etc.), though our bra calculator also accounts for variations in sizing standards across different regions.
Our bra calculator then converts your size across international sizing systems, accounting for the different measurement standards used in the US, UK, Europe, and France. This ensures you can shop confidently regardless of the brand's country of origin.