This free bra size converter translates your size between US, UK, EU, AU, French, and Italian systems. Shopping from an international brand? Enter your size in any system and see all equivalents instantly.
One size, five different labels. Our converter translates between all systems instantly.
Our bra size converter handles all major international systems because band sizes and cup letters don't translate directly across borders. The US and UK share the same band numbers but diverge on cup letters after DD. European sizing uses centimeter-based bands (65, 70, 75...) and a simpler cup sequence without double letters. Australian sizing uses dress-size numbers for bands (8, 10, 12...). See the full side-by-side table in our bra size chart.
The biggest source of confusion: a US DDD is the same as a UK E. The US system skips E entirely and goes DD → DDD, while the UK goes DD → E → F → FF. If you're ordering from a UK brand like Panache or Freya, this matters.
| US Band | UK Band | EU Band | AU Band | FR Band |
|---|---|---|---|---|
| 28 | 28 | 60 | 6 | 75 |
| 30 | 30 | 65 | 8 | 80 |
| 32 | 32 | 70 | 10 | 85 |
| 34 | 34 | 75 | 12 | 90 |
| 36 | 36 | 80 | 14 | 95 |
| 38 | 38 | 85 | 16 | 100 |
| 40 | 40 | 90 | 18 | 105 |
| 42 | 42 | 95 | 20 | 110 |
For cup letter conversions, the differences start at DD. See our full bra size chart for the complete cup mapping, or use the bra size converter above to check a specific size.
US DD ≠ UK E. In the US system, DD is followed by DDD (also called F). In the UK system, DD is followed by E. A US DDD and a UK E are the same cup — but a US DD and a UK E are not. This single-letter difference causes more wrong purchases than any other sizing issue.
EU bands are centimeters, not inches. An EU 75 is not 75 inches — it is 75 centimeters, which equals a US/UK 34 band. EU bands increment by 5 (65, 70, 75, 80...) while US/UK bands increment by 2 (30, 32, 34, 36...).
French sizing adds 15. If you know your EU size, add 15 to get your French size. An EU 75B becomes a French 90B. Australian sizing uses dress sizes (8, 10, 12, 14...) and follows UK cup letters.
Japanese cups run smaller. A Japanese C cup is roughly equivalent to a US B cup. If ordering from Japanese brands like Wacoal Japan (distinct from Wacoal US), size up one cup from your converted size. The bra size converter accounts for these differences automatically.
For a visual breakdown of how cup letters differ between systems, see our international bra size chart.
International sizing does not have to be confusing. Our bra size converter makes it simple — enter your known size above and see your equivalent in every major system instantly.
Different brands interpret sizes differently too — see our brand sizing guide for how 15 major brands compare. Need to find your size first? Try our bra size calculator.
