UK to EU bra size converter
Matches the UK inch band to the EU cm band and gives the matching cup letter.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Enter uk band and uk cup.
- The result appears straight away and updates as you edit.
- Copy the result, or copy a link that keeps the same values to share it.
How it is calculated
Band: US and UK 32 = EU 70 = FR 85 = IT 1 = AU 10, and each step adds 2 in (US, UK), 5 cm (EU, FR), 1 (IT) or 2 (AU). Cup: letters are matched by position. UK: AA A B C D DD E F FF G, US: AA A B C D DD DDD G H I, EU, FR and IT: AA A B C D E F G H I.
Example
Inputs: UK band = 36, UK cup = E. Result: EU size: 80F; US size: 36DDD; French size: 95F.
Limits and caveats
- Follows the usual retail chart; some brands differ by one cup size.
- Some US brands label DDD as F, and Australian cup letters past F are not consistent, so they are not shown.
Questions about this tool
What is a UK FF in EU sizes?
It is an EU H, since both are the ninth cup in their sequences.
Why does the EU letter run one ahead after DD?
EU sizing goes straight from D to E, while UK sizing puts DD in between.
Do all European shops use the same sizes?
Germany, Spain, the Netherlands and many others use EU sizes, while France adds 15 to the band number.