How do I measure my bust and band size accurately?

To measure your bust: Wrap the tape around the fullest part of your chest, keeping it parallel to the ground. To measure your band: Wrap the tape directly under your breasts, snug but not tight, ensuring it's parallel to the ground.

What's the difference between US, UK, and EU bra sizes?

US and UK sizes use the same band measurement (inches) but may differ in cup progression. EU sizes use centimeters for band measurement and different cup letters. Our calculator automatically converts between these systems.

Why might my calculated size differ from what I usually wear?

Many women wear incorrectly sized bras due to outdated fitting methods, brand variations, or changes in body shape. The calculator uses current international standards, but individual fit may vary by brand.

How often should I remeasure my bra size?

It's recommended to remeasure every 6-12 months or after significant weight changes, pregnancy, or surgery. Body changes can affect your bra size over time.

Bra Size Calculator - Find Your Perfect Fit

Bust Size (cm)

Band Size (cm)

Your Perfect Bra Size

36C

Based on your measurements and international standards

Region	Band Size	Cup Size	Full Size
US/CA	36	C	36C
UK/AU	36	C	36C
EU	80	C	80C
FR/ES/BE	95	C	95C

Fitting Insights

The band should fit snugly on the loosest hook
Cups should fully contain breast tissue without gaping
The center gore should lie flat against your sternum
Straps should stay in place without digging in

Understanding Bra Sizing

Finding the right bra size is essential for comfort, support, and confidence. Bra sizing consists of two components: the band size (numerical) and the cup size (letter). The difference between your bust and underbust measurements determines your cup size.

International Size Conversions

Bra sizing varies by country and region. US and UK sizes use inches for band measurement but may have different cup progressions. EU sizes use centimeters for band measurement. Our calculator automatically converts between these systems to give you accurate sizing no matter where you shop.

Why Proper Fit Matters

Wearing the correct bra size improves posture, provides better support, enhances comfort, and can even make clothing fit better. Studies suggest that up to 80% of women wear the wrong bra size, often due to outdated fitting methods or not remeasuring after body changes.

Frequently Asked Questions

How do I measure my bust and band size accurately?: To measure your bust: Wrap the tape around the fullest part of your chest, keeping it parallel to the ground. To measure your band: Wrap the tape directly under your breasts, snug but not tight, ensuring it's parallel to the ground.
What's the difference between US, UK, and EU bra sizes?: US and UK sizes use the same band measurement (inches) but may differ in cup progression. EU sizes use centimeters for band measurement and different cup letters. Our calculator automatically converts between these systems.
Why might my calculated size differ from what I usually wear?: Many women wear incorrectly sized bras due to outdated fitting methods, brand variations, or changes in body shape. The calculator uses current international standards, but individual fit may vary by brand.
How often should I remeasure my bra size?: It's recommended to remeasure every 6-12 months or after significant weight changes, pregnancy, or surgery. Body changes can affect your bra size over time.

Disclaimer: This calculator provides estimates based on general international sizing guidelines. Bra fit can vary between brands and styles. We recommend trying on bras when possible and consulting brand-specific size charts for the most accurate fit. This tool is for guidance purposes only.