How does Wacoal bra sizing run?
Wacoal is labelled in US sizing, carrying cups A–K. Consistent sizing, D+ specialist. Below is how a Wacoal size translates across all eight regional standards, plus sister sizes and where to buy.
Wacoal size range & system
Wacoal sizes in US, with cups A–K. Known for everyday, fullbust, tshirt.
Wacoal size conversion chart
Each row is one Wacoal cup size read across the eight standards. The US column (highlighted) is how Wacoal labels its bras.
| US | UK | EU | FR | IT | AU | JP | IN |
|---|---|---|---|---|---|---|---|
| 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 |
Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.
Common Wacoal sizes
Open the full eight-standard conversion for a specific size:
Sister sizes in Wacoal
If a Wacoal 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 Wacoal →Where to buy Wacoal
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Wacoal sizing FAQ
- Does Wacoal run true to size?
- Consistent sizing. D+ specialist. True to size. Premium quality.
- What sizing system does Wacoal use?
- Wacoal is labelled in US sizing, with cups from A 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 Wacoal 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.