Convert bra size from European to American by entering the EU band and cup in the Bra Size Converter, then reading the equivalent US/Canada result. In the converter's reference mapping, EU 75C corresponds to US 34C: the EU label uses centimetres, while the US label uses inches. The cup is a separate part of the label, and extended cup names do not always match across systems. The converter accepts a size from US/Canada, UK, EU, FR, or AU/NZ and displays the matching band and cup in every other supported system. That makes it practical for reading an imported EU label, shopping on a European site when you know US sizing, or checking a known size in another region. Its cross-checked reference ladder accounts for the points where US and UK cup names diverge, European labels avoid double letters, French band numbers run 15 higher than EU numbers, and AU/NZ uses short band numbers. Everything runs in your browser, so nothing you type is uploaded or stored anywhere. Treat the conversion as a well-researched starting point rather than a guarantee, because fit varies by brand, style, fabric, and construction.
What changes between European and American sizing
A bra label combines a band and a cup. The band represents the measurement around the ribcage, while the cup expresses the difference between the bust and band measurements. Changing only the band can therefore leave you with the wrong cup volume. For this converter, EU means the German centimetre-based system, while French and Spanish labels are handled separately under FR.
| System | Band format | Cup-label detail |
|---|---|---|
| US/Canada | Inches, using numbers from 28 to 44 | Uses the US cup-letter sequence |
| UK | Inches, using numbers from 28 to 44 | Matches US through DD, then follows a different extended sequence |
| EU (German) | Centimetres | Continues through single letters without using double letters |
| FR (French/Spanish) | Centimetres | Uses French band numbers that run 15 higher than EU numbers |
| AU/NZ | Its own short band numbers | The converter supplies the matching cup alongside the converted band |
These are naming conventions, not a guarantee that two labels will physically fit identically. The converter uses one cross-checked reference ladder to build every result, so it can account for both band differences and cup names that diverge after the basic sizes.
Convert an EU bra size in three steps
- Take or confirm your band measurement. If you already have a reliable EU label, note its band number. Otherwise, wrap a soft tape measure snugly around your ribcage directly under your bust. Keep it level and parallel to the floor, then round to the nearest inch or centimetre.
- Establish the cup measurement. Take a loose measurement around the fullest part of your bust. Subtract the band measurement from this bust measurement. The difference sets the cup letter, using roughly one inch of difference per cup size.
- Enter the size and read the equivalents. Choose EU as the input system, select the band and cup, and read the US/Canada answer in the results table. The same table also shows the corresponding UK, FR, and AU/NZ sizes.
You do not have to begin with EU sizing. If you already know a US, UK, FR, or AU/NZ bra size, choose that system as the input and read the EU result. The same process handles the conversion in whichever direction your available label requires.
Measurements when the European label is missing
If you cannot read the band or cup on a product, use two body measurements rather than estimating from a general clothing size. For the band, keep the tape snugly against the ribcage without tightening it. For the bust, let the tape sit loosely around the fullest part rather than pulling it taut. You can also follow this guide to measure your bra size accurately at home.
Keep both measurements in the same unit. For an approximate cup estimate, the calculation is:
Cup difference = loose bust measurement − snug band measurement
Express that difference in inches when using the converter's rough one-inch-per-cup guide:
| Approximate bust-minus-band difference | Starting cup size |
|---|---|
| 1 inch | A |
| 2 inches | B |
| 3 inches | C |
| 4 inches | D |
| 5 inches | DD |
These are starting estimates rather than exact fitting rules. Extended cup sizes are especially sensitive to differences in naming conventions, so use the converter's complete result rather than extrapolating indefinitely from this short guide.
Read extended cup labels correctly
Do not assume that the cup text can be copied unchanged after DD. US and UK cup letters agree through DD, but their sequences then diverge. The US ladder continues with DDD, G, H, and I, while the UK sequence continues with E, F, FF, G, and GG. Editing the band while leaving the cup code alone would therefore produce an unreliable result.
European cup labels use a different approach again: they avoid double letters and continue through single-letter names such as A, B, C, D, E, F, and G. As a result, an extended US cup code is not automatically the correct EU cup code. French and Australian/New Zealand results should likewise be read from the converter rather than assembled by manually changing the band.
The converter builds each output from one cross-checked reference ladder specifically to handle these divergences rather than guessing from the visible characters. This is particularly important when translating extended cup sizes for imported bras or international online stores.
Make the converted size a reliable starting point
Choose your input system according to the label you trust. Enter an EU size when translating an EU-marked product to US sizing. Enter a US or UK size when you need the EU equivalent. FR and AU/NZ sizes work in the same way: select the system you recognise, enter both band and cup, and read the US result alongside the other systems.
Even a correctly translated label is not a guarantee of fit. Bra sizing is not perfectly standardised, and fit can vary noticeably between brands, styles, fabrics, and wired versus wireless construction. Vanity sizing is also common, so two labels that convert to the same nominal size may still be cut differently.
Before buying, compare the converted result with the specific seller's size chart and try the bra on whenever possible. Pay particular attention to the brand's guidance in extended cup ranges, where naming conventions differ most. Use the conversion to remove the language and unit confusion quickly, then let the product's own sizing information and real-world fit make the final decision.