Finding the right bra size internationally is notoriously complex due to varying band increments and cup labeling systems. Our International Bra Size Converter simplifies this process by mapping American, British, European, and Australian standards. We carefully account for differences in plus-sizing and double-letter cup progressions, helping you shop across global brands with confidence and comfort.
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Bra Size Converter
Convert bra band and cup sizes between US, UK, EU, and AU standards.
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Bra Size Calculator
Measurement Guide
Band
Measure around ribs
Bust
Measure around fullest part
us34C
uk34C
eu75C
au75C
Did You Know?
80% of women wear the wrong bra size. A well-fitting bra should be level all the way around and should not move when you raise your arms.
Conversion Tip
EU and AU bands use the measurement in centimeters (e.g., 75cm), while US and UK sizes use inches (e.g., 34").
About Bra Size & Cup Converter
1
Enter Band
Select or input your band size (e.g., 34, 75).
2
Select Cup
Choose your cup letter (e.g., C, DD).
3
Get Equivalents
See matching international sizes instantly.
Key Features
Cup Progression Awareness
Correctly maps DD, E, F, and G cups across the differing US and UK scales.
Band Unit Sync
Translates between inch-based (US/UK) and centimeter-based (EU) band measurements.
Global Brand Matching
Ideal for determining your fit for international luxury and specialty lingerie brands.
Frequently Asked Questions
After a D cup, UK sizes use double letters (DD, E, EE) differently than the US standard.
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