International Bra Size Conversion Chart | EUR, UK, USA, Australia, FranceExpert Sizing Guide
International Bra Size Conversion Chart
Confused by different sizing systems? Our comprehensive conversion table covers EUR, UK, USA, Australia/NZ, and France/Spain standards — so you always find your perfect fit, wherever you shop.
✓ Verified by fit specialists
✓ 5 international size systems
✓ 100+ size combinations
✓ Updated 2026
✓ Free to use — no sign-up
Find Your Size in Any Country
Bra sizing conventions vary significantly between regions. A UK 34B is not the same construction as a US 34B — band measurements and cup-volume calculations differ by country. Use the search box below to enter any size you know, and instantly see its equivalent across all systems.
EUR
UK
USA
Australia / NZ
France / Spain
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How to Use This Chart
Three simple steps to convert your bra size internationally.
1
Know Your Current Size
Start with the size printed on your current bra’s label. Note both the band number and the cup letter — these are what you’ll convert.
2
Search or Scroll
Type your size in the search box above, or scroll to find your current size in its home column (e.g., UK column if you’re UK-sized).
3
Read Across the Row
Each row shows the equivalent size in all other countries. Use this number when ordering internationally or shopping abroad.
4
Always Try Before You Buy
Conversions are guidelines — fit varies by brand and style. If possible, try styles on or use a brand’s specific fit guide alongside this chart.
Frequently Asked Questions
Each country developed its own measurement standards independently. The band size in EUR sizing is typically based on the actual underbust measurement in centimetres, while the UK and US use inches and apply different formulas. Cup sizing also uses different volume-increment methods, meaning a UK D cup and a US D cup hold different volumes of breast tissue.
The band numbers in UK and US sizing look very similar — a UK 34 and a US 34 both refer to a 34-inch band. However, cup lettering diverges from DD onwards: a UK DDD equals a US F, and so on. Always check the full conversion when ordering from overseas retailers.
EUR sizing (also called European or Continental sizing) is used widely across continental Europe. The band number represents the underbust measurement in centimetres — so a 75 band means approximately 75 cm underbust. Cup letters follow a similar progression to UK sizing but the band numbers look very different.
French and Spanish sizes add 15 to the EUR band number, so an EUR 75 becomes an 90 in France/Spain. The cup letters generally follow the same progression, though you may see slightly different labelling at larger cup sizes. Always double-check when purchasing luxury French lingerie brands.
Measure your underbust (band measurement) and your fullest bust point (cup measurement) with a soft tape measure. The difference in centimetres or inches determines your cup size. For the most accurate result, get measured by a trained fitter in-store — professional fitting is still the gold standard and many women discover they have been wearing the wrong size for years.
