👙 EU Bra Size to US Bra Size Converter
Free online tool to convert EU bra sizes to US. Enter your band and cup size for an instant, accurate result — band and cup both converted.
Result
34C
75C EU = 34C US
EU Bra Size to US Bra Size Conversion Table
| EU Size | US Size |
|---|---|
| 65A EU | 30A US |
| 65B EU | 30B US |
| 65C EU | 30C US |
| 65D EU | 30D US |
| 65E EU | 30DD US |
| 65F EU | 30DDD US |
| 70A EU | 32A US |
| 70B EU | 32B US |
| 70C EU | 32C US |
| 70D EU | 32D US |
| 70E EU | 32DD US |
| 70F EU | 32DDD US |
| 75A EU | 34A US |
| 75B EU | 34B US |
| 75C EU | 34C US |
| 75D EU | 34D US |
| 75E EU | 34DD US |
| 75F EU | 34DDD US |
| 80A EU | 36A US |
| 80B EU | 36B US |
| 80C EU | 36C US |
| 80D EU | 36D US |
| 80E EU | 36DD US |
| 80F EU | 36DDD US |
Conversion Formula
Band conversion reference: US/UK: 28 30 32 34 36 38 40 42 44 EU: 60 65 70 75 80 85 90 95 100 FR: 75 80 85 90 95 100 105 110 115 AU: 6 8 10 12 14 16 18 20 22 JP/RU/KR: same as EU Cup conversion — canonical index (12 sizes, index 0–11): US: AA A B C D DD DDD G H I J K UK/AU/FR: AA A B C D DD E F FF G GG H EU/JP/RU/KR: AA A B C D E F G H I J K Common mistakes: US DDD ≠ UK DDD — US DDD = UK E US G ≠ EU G — US G = EU G (index 7 matches here) US DD = UK DD (same), but US DD = EU E (different)
About EU Bra Size to US Bra Size Conversions
This free EU to US bra size converter handles both band and cup sizes accurately — including the differences between US DDD, UK E, and EU F at the larger end of the scale. Select your band and cup below for an instant result.
This conversion uses a non-linear (reciprocal) relationship, so a simple multiplication factor does not apply. The formula section below explains the method, and the reference table shows common converted values.
Below you will find a pre-calculated conversion table, the exact formula used, and answers to common questions about EU Bra Size to US Bra Size conversions. All calculations follow internationally recognized standards.
Frequently Asked Questions
How do I convert EU Bra Size to US Bra Size?
This conversion is non-linear. Use the calculator above for accurate results, or refer to the formula section on this page.
How many US Bra Size are in 1 EU Bra Size?
The relationship between EU Bra Size and US Bra Size is non-linear. Use the calculator above or the reference table on this page for specific values.
Is EU Bra Size larger or smaller than US Bra Size?
The size relationship between EU Bra Size and US Bra Size depends on the input value because this conversion is non-linear (reciprocal).
When would I use US Bra Size instead of EU Bra Size?
Use US sizing when shopping brands that label their products in the US system — for example, European luxury brands, UK high street stores, or Japanese lingerie retailers. Always verify sizing with the brand's own chart, as fit can vary by style and manufacturer even within the same system.
Why doesn't my cup letter stay the same when converting between systems?
Cup letters are only consistent up to D cup. From DD upward, the US uses DD, DDD, G, H, I while UK and AU use DD, E, F, FF, G, GG, H, and EU uses E, F, G, H, I. This means US 34DDD = UK 34E = EU 75F. The band number also changes because each system uses a different scale — US in even inches, EU and JP in 5 cm increments, FR adds 15 to the EU number, and AU uses garment numbers.
What is the most common conversion mistake with international bra sizes?
The most common mistakes are (1) keeping the cup letter unchanged when it should change — US DDD is NOT UK DDD, it is UK E; and (2) only converting the band while ignoring the cup. Both band and cup must be converted for an accurate size. A second common mistake is confusing EU and FR sizing: FR sizes are EU + 15 in the band but use the same cup letters.
Related Bra Size Conversions
All conversion results are provided for general informational purposes only. Our formulas use internationally recognized conversion factors; however, rounding may affect precision. Do not rely on these results for professional, medical, legal, or engineering decisions without independent verification. Read our full disclaimer.