How does Uniqlo bra sizing run?
Uniqlo is labelled in JP sizing, carrying cups A–D. AIRism wire-free is a cult favorite. Below is how a Uniqlo size translates across all eight regional standards, plus sister sizes and where to buy.
Uniqlo size range & system
Uniqlo sizes in JP, with cups A–D. Known for bralette, tshirt, everyday.
Uniqlo size conversion chart
Each row is one Uniqlo cup size read across the eight standards. The JP column (highlighted) is how Uniqlo 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 |
Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.
Common Uniqlo sizes
Open the full eight-standard conversion for a specific size:
Sister sizes in Uniqlo
If a Uniqlo 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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Uniqlo sizing FAQ
- Does Uniqlo run true to size?
- S/M/L sizing. Wire-free focus. Beauty Light and AIRism are cult favorites.
- What sizing system does Uniqlo use?
- Uniqlo is labelled in JP sizing, with cups from A to D. Use the conversion table above to read your size across US, UK, EU, FR, IT, AU, JP and IN.
- What is a 34D in Uniqlo 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.