How does Marks & Spencer bra sizing run?
Marks & Spencer is labelled in UK sizing, carrying cups AA–K. British staple — excellent everyday range. Below is how a Marks & Spencer size translates across all eight regional standards, plus sister sizes and where to buy.
Marks & Spencer size range & system
Marks & Spencer sizes in UK, with cups AA–K. Known for everyday, tshirt, sport.
Marks & Spencer size conversion chart
Each row is one Marks & Spencer cup size read across the eight standards. The UK column (highlighted) is how Marks & Spencer labels its bras.
| US | UK | EU | FR | IT | AU | JP | IN |
|---|---|---|---|---|---|---|---|
| AA | AA | AA | AA | AA | AA | AA | AA |
| A | A | A | A | A | A | A | A |
| B | B | B | B | B | B | B | B |
| C | C | C | C | C | C | C | C |
| D | D | D | D | D | D | D | D |
| DD | DD | E | E | E | DD | E | DD |
| DDD | E | F | F | F | E | F | E |
| G | F | G | G | G | F | G | F |
| H | FF | H | H | H | FF | H | FF |
| I | G | I | I | I | G | I | G |
| J | GG | J | J | J | GG | J | GG |
| K | H | K | K | K | H | K | H |
| L | HH | L | L | L | HH | L | HH |
| M | J | M | M | M | J | M | J |
Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.
Common Marks & Spencer sizes
Open the full eight-standard conversion for a specific size:
Sister sizes in Marks & Spencer
If a Marks & Spencer bra fits in the cup but the band is off, your sister size keeps the same cup volume with a different band — go down a band and up a cup, or up a band and down a cup. Example: a 34D and a 32DD hold the same cup volume.
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Find your size in Marks & Spencer →Where to buy Marks & Spencer
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Marks & Spencer sizing FAQ
- Does Marks & Spencer run true to size?
- UK sizing. A-K cups. British institution. Excellent everyday bras.
- What sizing system does Marks & Spencer use?
- Marks & Spencer is labelled in UK sizing, with cups from AA to K. Use the conversion table above to read your size across US, UK, EU, FR, IT, AU, JP and IN.
- What is a 34D in Marks & Spencer in EU sizing?
- A US 34D converts to EU 75D. Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.