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Japanese sizing · cup letter first

H75 Bra Size, In Full

A Japanese H75 is a 75 cm band with a H 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 34G.

The numbers

H75 measurements

Underbust≈ 75 cm (72.5–77.5)
Top bust≈ 102.5 cm
Difference≈ 27.5 cm → JP H
NotationCup first: H75, not 75H
The trap

A Japanese H is not a Western H

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 H75 corresponds to a US 34G and EU 75G. 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.

US34G
UK34F
EU / DE75G
FR / ES90G
IT3G
AU / NZ12F

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

Same volume, different band

H75 sister sizes

Snugger band— (off this chart)
Looser band, same volumeG80

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 depth Japanese domestic stock is genuinely scarce: this is specialist territory, and the practical route is international full-bust brands bought by conversion. The US/UK columns below are the sizes to shop.

Neighbors

Related Japanese sizes

Same band (75), other cups

Same cup (H), other bands

Answered

H75: answered

What is Japanese H75 in US sizing?

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

What measurements is H75 for?

An underbust around 75 cm (roughly 72.5–77.5 cm) and a top bust near 102.5 cm: a difference of about 27.5 cm, which Japanese sizing labels H. 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 H75?

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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