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European sizing · 48 sizes · tap any cell

The Triumph Japan Size Chart, Interactive

Triumph Japan charts to JIS L 4006 (the world's only codified national bra-sizing standard) shown here on its centimeter bands 65 to 90, cups A to H. Same band numbers as Europe; letters one step apart.

The native chart

Every Triumph Japan size: tap for conversions

Presented in EU-style letters to match the parent page; the drawer's JP row shows each size in native JIS letters.

Two measurements in

Your size at Triumph Japan

Same published math as the calculator (snug measure, no +4) then translated into Triumph Japan’s native notation and checked against the real chart above, which lights up your cell.

Reading it

How Triumph Japan sizing reads

JIS bands are the same centimeter figures as European bands, but the letter ladder is offset: a JIS C cup is a Western B. This grid leads with the Western/EU reading so it lines up with the rest of this site; tap any cell and the JP row in the drawer gives the exact JIS label printed on the garment in Japan.

From our brand dossier

How Triumph Japan runs

BandBands run true to size: start with your measured band on the loosest hook.
CupCups grade small: try your measured cup and one up.
NotationEuropean system: A–H cups on 65–90 bands
Cup ladderA, B, C, D, E, F, G, H
Range48 sizes in the core chart
Sister ruleSame cup volume, one band step over: band down = cup letter up

Full fit notes, style guidance and comparisons live on the Triumph Japan brand page.

Honest edges

Where this chart ends

The JIS grid is deliberately compact: past H or outside 65–90, Japanese retail rarely goes, and Western deep-cup houses like Panache take over. The fix guides handle fit symptoms.

Answered

Triumph Japan sizing: answered

Does Triumph Japan run true to size?

Band: Bands run true to size: start with your measured band on the loosest hook. Cup: Cups grade small: try your measured cup and one up. In one line: the garment label in Japan prints the JIS letter: one deeper than the Western letter shown in this grid.

What sizing system does Triumph Japan use?

Native European sizing. JIS bands are the same centimeter figures as European bands, but the letter ladder is offset: a JIS C cup is a Western B. This grid leads with the Western/EU reading so it lines up with the rest of this site; tap any cell and the JP row in the drawer gives the exact JIS label printed on the garment in Japan. The interactive chart above shows every size with its US, UK, EU and FR equivalents.

What sizes does Triumph Japan carry?

65–90 bands with A–H cups in European notation. 48 sizes in the core chart. Presented in EU-style letters to match the parent page; the drawer's JP row shows each size in native JIS letters.

What if Triumph Japan doesn't make my size?

The JIS grid is deliberately compact: past H or outside 65–90, Japanese retail rarely goes, and Western deep-cup houses like Panache take over. The fix guides handle fit symptoms. Sister sizes (same volume, different band) sometimes bridge a one-band gap: the calculator above tries them automatically before giving up.

Shop itAt HauteFlair, our sister retailer

Opens HauteFlair’s own hub page; use your measured size there. HauteFlair is owned by the same company as Brasize.ai; that relationship never changes the sizing math, charts, or fit advice on this page. How this site makes money.

Start from the measured size

Two measurements, no inches added, sister sizes attached.

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