How does Wacoal Japan bra sizing run?
Wacoal Japan is labelled in JP sizing, carrying cups A–G. Japan’s #1 — precision fit. Below is how a Wacoal Japan size translates across all eight regional standards, plus sister sizes and where to buy.
Wacoal Japan size range & system
Wacoal Japan sizes in JP, with cups A–G. Known for everyday, tshirt, luxury.
Wacoal Japan size conversion chart
Each row is one Wacoal Japan cup size read across the eight standards. The JP column (highlighted) is how Wacoal Japan 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 |
Band conversions are exact; cup fit still varies by brand, style, and body — a conversion is a starting point, not a guarantee.
Common Wacoal Japan sizes
Open the full eight-standard conversion for a specific size:
Sister sizes in Wacoal Japan
If a Wacoal Japan 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.
Want your exact starting size in Wacoal Japan? Two measurements, two minutes — free, nothing stored.
Find your size in Wacoal Japan →Where to buy Wacoal Japan
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Wacoal Japan sizing FAQ
- Does Wacoal Japan run true to size?
- Japanese sizing (A65-G85). Japan #1 brand. Wing sub-brand for youth.
- What sizing system does Wacoal Japan use?
- Wacoal Japan is labelled in JP sizing, with cups from A to G. 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 Japan 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.