Bra Size Calculator
This calculator estimates bra size based on bust size and band size (frame size). To ensure accuracy, measure to the nearest ¼ inch or ½ cm. This calculator provides results for the United States, the United Kingdom, European Union, France, Belgium, Spain, Australia, and New Zealand.
Modify the values and click the calculate button to use:
Result:
| Location | Size | Cup |
|---|---|---|
| US/CA | – | – |
| UK | – | – |
| US/CA (Underbust +4)* | – | – |
| UK (Underbust +4)* | – | – |
| EU (EN 13402) | – | – |
| FR/BE/ES | – | – |
| Australia/New Zealand | – | – |
* Few manufacturers use the underbust +4 method which adds four inches to the band size.
The calculation result is only a starting point. A professional fitting or trying on bras
to see which sizes work best is recommended.
Bra Size Calculator – Find Your Perfect Fit
Finding the right bra size is essential for comfort, support, and confidence. Our Bra Size Calculator simplifies the process by estimating your bra size based on your bust and band measurements. Whether you’re shopping in the US, UK, EU, Australia, or other regions, this tool provides accurate conversions to help you find the best fit.
How It Works
- Enter Measurements – Input your bust size (fullest part) and band size (underbust) in inches or centimeters.
- Click Calculate – Our algorithm computes your bra size across multiple international sizing standards.
- Get Your Results – View your recommended size in US, UK, EU, French/Belgian, and Australian/New Zealand sizing.
Why Use Our Calculator?
✅ Accurate & Reliable – Based on standard sizing charts and professional fitting guidelines.
✅ Multiple Size Systems – Converts between US, UK, EU, and more for hassle-free shopping.
✅ Easy to Use – Simple interface with clear instructions for precise measurements.
✅ Helpful Tips – Includes notes on proper measuring techniques and fit recommendations.
Note on Fit
Bra sizing can vary by brand and style. This calculator provides a starting point, but we always recommend trying on bras or consulting a professional fitter for the best results.
Try it now and discover your perfect fit!