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Band cm + cup letter

Chinese bra size converter

Translate Chinese sizes like 75A, 80B, 85C into US, UK and EU bra sizes. Pick your under-bust in cm and your cup letter below.

CN ↔ US ↔ UK ↔ EU A through F cups Updated May 2026
Bra · CN → US / UK / EU Band · Cup
Band — under-bust (cm)
Cup
Resulttabular · band+cup
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On this page Band chart How to measure Bra questions Related tools

01 /Chinese bra band conversion chart

CN Band (cm)USUKEU
70323270
75343475
80363680
85383885
90404090
95424295
On cups: Chinese A/B/C/D use the same letters as the US, but each cup is calibrated against a slightly smaller frame. If you wear a US 34B, start with Chinese 75B; if the cup feels shallow, step up to 75C.

02 /How to measure for a Chinese bra

1. Under-bust (band)

Wrap a soft tape snugly (not tight) around your ribcage, directly beneath the bust. Read in centimetres. Round to the nearest 5 — that's your CN band (70, 75, 80…).

2. Bust (cup)

Wrap the tape around the fullest part of your bust. The difference between bust and under-bust gives your cup: roughly 10 cm = A, 12 cm = B, 14 cm = C, 16 cm = D.

3. Verify with the converter

Pick your band and cup in the converter above to see the US / UK / EU equivalents.

03 /Chinese bra size questions

What is 75A in US bra size?

75A converts to US 34A. The 75 is the under-bust in cm; the cup letter transfers directly.

What is 80B in US?

Roughly US 36B.

What is 85C in US?

US 38C.

Do Chinese bra cups run smaller?

Slightly, yes. If you are between cups, size up one letter.

How do I measure my under-bust?

Snug tape directly below the bust, read in cm, round to the nearest 5.