EU to US Bra Band Size Conversion
| EU Band | US Band |
|---|---|
| 70 | 32 |
| 75 | 34 |
| 80 | 36 |
| 85 | 38 |
| 90 | 40 |
Sizing conventions vary by brand and by cut — this table shows the standard published conversion. Always check the garment's own size chart when one is available. See how these tables are compiled.
The band is metric on one side and imperial on the other
A EU band figure is underbust circumference measured plainly in centimetres; the US measures the identical thing in inches, so a EU 75 lands close to a US 34 once you divide by 2.54 and round to a brand's nearest published band. That part behaves like converting a shirt collar. Cup lettering is the part that doesn't behave like arithmetic at all, because the EU alphabet keeps going past D into E, F, FF, G and further, while the mainstream American convention has historically stalled out at DD or DDD instead of adding new letters for the same range.
US specialty retailers built around fuller-bust fitting have closed a lot of that gap over the last decade or two, stocking the extended letters that mainstream department-store bras in America still mostly skip — a EU shopper landing on a generic big-box US brand's chart may find nothing past a DD, while the same shopper checking a specialty fitter's size run finds a lettered option that actually matches their EU cup.
French and Italian construction habits carry their own wire geometry
Continental corsetry, especially houses with a long French tradition, sometimes shapes the underwire to sit differently against the ribcage than typical American wire does — some cut higher on the side, others hug closer to the sternum — a design choice that has nothing to do with the band-and-cup number and everything to do with which specific maker cut the piece.
One volume, several ways to label it
A given cup volume isn't pinned to one band size — go up a band and the equivalent cup letter drops a step, go down a band and it climbs one, so a EU 75E and an EU 80D can describe roughly the same actual cup capacity. Keep that relationship in mind if your first converted US size doesn't sit right; the adjacent sister combination is often the fix rather than a completely different converted number.
What actually helps for an unfamiliar US brand
Do the band arithmetic with confidence, then match your real bust-minus-band figure against that specific brand's own cup chart rather than trusting a fixed EU letter-to-US letter table, and check a fuller-bust specialty retailer first if your EU cup sits at E or beyond.
Frequently asked questions
Is converting a EU band size to US inches straightforward?
Yes, it's genuine unit arithmetic on the same underbust measurement, similar in mechanism to a shirt-collar conversion — brands round to their own nearest published band size.
Why doesn't my EU E or F cup show up on a mainstream US brand's chart?
Mainstream American cup lettering has historically stopped at DD or DDD rather than adding new letters, unlike the EU alphabet, which keeps extending — check a specialty fuller-bust US retailer instead of a generic department-store brand.
Does French or Italian lingerie fit differently even at the right converted number?
Sometimes — certain continental houses shape the underwire to sit differently against the ribcage, a maker-specific design choice separate from the band-and-cup conversion itself.
What if my converted US size doesn't sit right?
Try the adjacent sister combination — one band size up with the cup letter down a step, or the reverse — since the same cup volume can be described more than one way.
Should I check a specialty retailer before a mainstream brand?
Worth doing if your EU cup is E or larger — fuller-bust specialty US retailers have generally kept pace with extended lettering in a way big-box mainstream brands often haven't.