Marks & Spencer bra size guide
Marks & Spencer uses standard UK sizing. Bands are measured in inches, and cups above a D run DD, E, F, FF — a different progression from both the US system (DD, DDD) and EU sizing (single letters all the way up).
UK cup lettering compared
| Cup letter (UK, M&S) | EU equivalent | US equivalent |
|---|---|---|
| A–D | A–D | A–D |
| DD | E | DD |
| E | F | DDD |
| F | G | DDDD/G |
| FF | H | H |
Why this matters
Convert your size
Coming from EU or US sizing? Use our international bra size chart or the dedicated EU→UK converter to find your Marks & Spencer size.
This is an independent, unaffiliated reference based on the brand's publicly published sizing method. Not officially associated with or endorsed by the brand. Always check the current size chart on the retailer's own site before ordering.
Frequently asked questions
What sizing system does Marks & Spencer use?
Standard UK sizing — band in inches, with cup letters running DD, E, F, FF above D.
Is UK DD the same as US DD?
The band and the DD letter are close, but above DD the systems diverge — UK goes to E and F where US goes to DDD.
What is a UK 34C in EU sizing?
Approximately EU 75C.