EU to US conversion

EU 70B in US Bra Size

Convert 70B from European sizing to US sizing, with the full international table, sister sizes, and practical fit checks in one place.

Instant answer

70B (EU) =

32B US

In this sizing table, 70B in European sizing converts to 32B in US sizing.

Full conversion table for 70B (US 32B)

32B bra size conversion across US, UK, EU, French, and Australian sizing.
US	UK	EU	FR	AU
32B	32B	70B	85B	10B

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

What this conversion means

70B is the European label in this dataset, and it points back to 32B in US sizing. The band number may change a lot between systems, especially for EU and French labels, but the table keeps the intended fit target together.

Sister sizes for the US equivalent (32B)

Sister sizes: 30C and 34A can be worth checking when the cup volume feels close but the band needs a different feel.

What measurements make a 70B?

70B is built from a band measurement and a bust measurement, not from the label alone. In the current calculator formula, the closest starting range is about 31-33 inches (79-84 cm) under the bust and about 33.5-34.5 inches (85-88 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 32B as the US equivalent for those measurement notes.

Is 70B big or small?

70B is not automatically big or small; it depends on the band and the cup together. In this size set, the US equivalent uses a smaller 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 70B 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 70B differs between brands

Two brands can print 70B or its equivalent on the tag and still cut the bra differently. 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 70B

When shopping for 70B, start with styles that make the band easy to judge. 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 70B the same as 32B in the US?

In this dataset, 70B (EU) converts to 32B 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 70B in UK sizing?

70B (EU) matches the same base record as 32B (UK). The full table on this page shows each supported label side by side.

How do I check the fit of 32B?

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 32B?

30C and 34A are the closest sister-size options for 32B 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 70B?

70B maps to US 32B here. The current calculator formula points to about 31-33 inches underbust and 33.5-34.5 inches bust, or roughly 79-84 cm and 85-88 cm. Treat that as a starting range and then check the real fit.