Chinese Bra Size to US Converter (75A, 80B, 85C)
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.
Quick answer: Chinese bra bands use under-bust centimeters. 75A is roughly US 34A, 80B is roughly US 36B, and 85C is roughly US 38C.
Use this as a starting size. Cup depth, wire shape and brand fit can vary.
01 /Chinese bra band conversion chart
| CN Band (cm) | US | UK | EU |
|---|---|---|---|
| 70 | 32 | 32 | 70 |
| 75 | 34 | 34 | 75 |
| 80 | 36 | 36 | 80 |
| 85 | 38 | 38 | 85 |
| 90 | 40 | 40 | 90 |
| 95 | 42 | 42 | 95 |
02 /Common bra size examples
75A to US
Chinese 75A is roughly US 34A. The 75 means under-bust in centimeters, and the A cup transfers directly.
80B to US
Chinese 80B is roughly US 36B. If the listing's cup looks shallow, compare the product chart and consider one cup up.
85C to US
Chinese 85C is roughly US 38C. For sports bras or wire-free styles, brand sizing can be more flexible than wired bras.
03 /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.
04 /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.