EU to US conversion

EU 85B in US Bra Size

Convert 85B from European sizing to US sizing, with the full international table, sister sizes, and practical fit checks in one place.

Instant answer

85B (EU) =

38B US

In this sizing table, 85B in European sizing converts to 38B in US sizing.

Full conversion table for 85B (US 38B)

38B bra size conversion across US, UK, EU, French, and Australian sizing.
US	UK	EU	FR	AU
38B	38B	85B	100B	16B

Bra sizing varies between brands. Use this as an accurate starting point and check the fit.

What this conversion means

European sizing can look unfamiliar because the band and cup sequences are not always written like US labels. For 85B, this shared data file maps the fit target to 38B in US sizing.

Sister sizes for the US equivalent (38B)

Sister sizes: 36C and 40A can be worth checking when the cup volume feels close but the band needs a different feel.

What measurements make a 85B?

85B starts with the underbust, then adds cup depth from the bust measurement. In the current calculator formula, the closest starting range is about 37-39 inches (94-99 cm) under the bust and about 39.5-40.5 inches (100-103 cm) around the fullest part of the bust. The band comes from the underbust rounding, while the cup step comes from the difference between bust and band. This page uses 38B as the US equivalent for those measurement notes.

Is 85B big or small?

The label 85B can look more dramatic than it fits, especially across systems. In this size set, the US equivalent uses a fuller band and a lower cup step. Cup letters are relative to the band, so a D on one band is not the same volume as a D on every other band. The most useful question is whether the band stays level and the cups hold smoothly, not whether the label sounds large or small.

If 85B doesn't fit right

Band rides up: The band may be too loose or stretched out; try a snugger band or compare the snugger sister size.

Cups gape: The cup may be too roomy, too deep, or pulled away by a loose band; check the band before changing cup volume.

Cups spill: The cup volume may be too small or the cup shape may be too closed; try one cup step up before changing the band.

Straps dig in: The straps may be compensating for a band that is not supporting enough; reset the band fit before tightening straps.

How 85B differs between brands

Brand sizing matters for 85B because cup depth, wire width, and band stretch are design choices. A firmer elastic can make the same band feel smaller, and a shallow or narrow cup can make the same cup letter feel different. Check the retailer chart, read fit notes when available, and compare the label against the brand and region sizing guide before treating the conversion as final.

Shopping for 85B

A good shopping path for 85B starts with everyday support, then moves into outfit-specific shapes. If the cup is in a lower or middle step, lightly lined T-shirt styles can make gaps easy to spot. Fuller cup steps often benefit from styles with steadier side support, deeper cups, or a balconette shape depending on breast shape. For special outfits, compare the fit needs in the outfit guides before choosing a strapless, plunge, or backless option.

Bras in your size

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Everyday Fit Store

Placeholder for a broad size range and return-friendly basics.

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Comfort Band Co.

Placeholder for supportive everyday styles by band and cup.

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Soft Cup Edit

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FAQ

Is 85B the same as 38B in the US?

In this dataset, 85B (EU) converts to 38B in US sizing. Some brands publish their own charts, so use this as the closest standard label and still check the real fit.

What is 85B in UK sizing?

85B (EU) matches the same base record as 38B (UK). The full table on this page shows each supported label side by side.

How do I check the fit of 38B?

Start with the band: it should feel firm and even around your ribcage. Then check cup containment, wire comfort, and whether the center gore lies close on wired styles.

What sister sizes work with 38B?

36C and 40A are the closest sister-size options for 38B in this dataset. Try a sister size when cup volume feels close but the band needs to feel snugger or looser.

Why do bra sizes differ between countries?

Bra labels are written differently across US, UK, EU, French, and Australian systems. Cup letters can also diverge after D, so a converted label is a starting point rather than a promise of identical fit.

What measurements usually make 85B?

85B maps to US 38B here. The current calculator formula points to about 37-39 inches underbust and 39.5-40.5 inches bust, or roughly 94-99 cm and 100-103 cm. Treat that as a starting range and then check the real fit.