Chinese bra labels look familiar because they use A, B, C and D cup letters, but the band number is written in centimeters. This guide shows how to convert common China bra sizes without guessing.
Quick answer: a Chinese bra size combines a centimeter band with a cup letter. 75A is about US 34A, 80B is about US 36B, and 85C is about US 38C. Always compare the seller's under-bust and bust measurements before ordering.
| Chinese band | Approx. US band | Example China size | Approx. US size |
|---|---|---|---|
| 70 | 32 | 70A, 70B, 70C | 32A, 32B, 32C |
| 75 | 34 | 75A, 75B, 75C | 34A, 34B, 34C |
| 80 | 36 | 80A, 80B, 80C | 36A, 36B, 36C |
| 85 | 38 | 85A, 85B, 85C | 38A, 38B, 38C |
| 90 | 40 | 90B, 90C, 90D | 40B, 40C, 40D |
| 95 | 42 | 95B, 95C, 95D | 42B, 42C, 42D |
Most Chinese bra labels use a European-style band number such as 70, 75, 80, 85, 90 or 95. That number refers to the under-bust measurement in centimeters. A 75 band is intended for someone close to a 75 cm under-bust, which roughly maps to a US 34 band.
The cup letter comes after the band: 75A, 80B, 85C and so on. The letter can be read like a familiar A, B or C cup, but cup volume is tied to the band. A 75C does not have the same cup volume as an 85C. That is why the band and cup must be converted together.
If the seller chart gives both under-bust and upper-bust rows, prioritize those rows over the product title. Marketplace titles are often copied across sizes, while the chart usually belongs to the product.
75A is roughly US 34A. It usually fits a 75 cm under-bust with a smaller cup difference. Check whether the listing is padded or push-up.
80B is roughly US 36B. If you are between bands, compare the hook range and band stretch because some Chinese brands run firm.
85C is roughly US 38C. For wired bras, compare both under-bust and cup depth; for wire-free styles, the sizing may be more forgiving.
US 34B usually maps to Chinese 75B, US 36C maps to Chinese 80C, and US 38D maps to Chinese 85D. Verify with the product chart.
On Taobao, AliExpress, Temu and Shein-style listings, bra charts may mix body measurements, finished garment measurements and size recommendations. Look for under-bust, bust, upper bust, cup, and band rows. If a chart shows only S, M, L or free size, treat the result as a general clothing fit rather than a true bra-size conversion.
Padding and structure matter. A molded push-up 80B can feel smaller than a soft wireless 80B because the cup shape is less flexible. For users between sizes, the safer first check is the band: if the band is wrong, cup adjustment will not fix the fit.
For quick lookup, use the dedicated Chinese bra size converter. For broader product categories, the Chinese size chart to US guide explains when bra charts should be handled separately from clothing charts.