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Japanese sizing · cup letter first

A75 Bra Size, In Full

A Japanese A75 is a 75 cm band with a A cup: written cup-first, measured in 2.5 cm steps, and one letter ahead of the Western alphabet. In US terms this body wears a 34AA.

The numbers

A75 measurements

Underbust≈ 75 cm (72.5–77.5)
Top bust≈ 85 cm
Difference≈ 10 cm → JP A
NotationCup first: A75, not 75A
The trap

A Japanese A is not a Western A

Japanese cup labels start earlier and step in 2.5 cm increments, so each letter sits roughly one label ahead of its Western namesake: this A75 corresponds to a US 34AA and EU 75AA. Order your Japanese letter from a Western shop (or vice versa) and you’re a full cup off before the parcel ships. The converter translates in both directions.

US34AA
UK34AA
EU / DE75AA
FR / ES90AA
IT3AA
AU / NZ12AA

Bands translate cleanly (same centimeters as EU labels); only the letters shift.

Same volume, different band

A75 sister sizes

Snugger band, same volumeB70
Looser band— (off this chart)

Japanese sisters move in 5 cm band steps with one cup letter, same volume, different circumference. Useful when domestic stock stops one band short of yours.

Construction

What works at this size

At this volume nearly every style in Japanese ranges works, and Japanese ranges lean heavily on molded, lightly padded cups with soft wires. Choose by neckline; construction rarely limits you here.

Neighbors

Related Japanese sizes

Same band (75), other cups

Same cup (A), other bands

Answered

A75: answered

What is Japanese A75 in US sizing?

US 34AA (UK 34AA). Japanese cup letters sit one label ahead of Western ones for the same body (a Japanese A corresponds to a Western AA-tier cup) so carrying the letter across unconverted buys a cup too big.

What measurements is A75 for?

An underbust around 75 cm (roughly 72.5–77.5 cm) and a top bust near 85 cm: a difference of about 10 cm, which Japanese sizing labels A. Japan measures in 2.5 cm cup steps against Europe's 2 cm, so conversions are nearest-label, not exact.

Why is the cup letter written first in A75?

Japanese convention writes cup-then-band. C70, not 70C. Same information, reversed order; on tags in Japan you may also see the band alone (70) with the cup on a separate line.

Shop itAt HauteFlair, our sister retailer

HauteFlair labels cups in UK letters, so these links already convert your size by position (a US DDD lands on a UK E, a US G on a UK F). 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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