JP chart
Japanese Bra Size Chart
Use this Japanese bra size chart for Japan sizing, which typically uses centimeter band labels such as 65, 70, 75, and 80 with cup letters based on bust difference.
Japanese bra size calculator
Enter your underbust and fullest bust in centimeters. This tool uses the chart ranges below and shows Japanese labels with the cup first, such as C70.
Covers bands 65–95 and cups A–H. For other sizes, use the brand’s full chart.
Japanese Bra Band Size Chart
Japanese band labels are centimeter-based and commonly align with EU-style band numbers, though brand fit can still vary.
| JP Band Size | Underbust Range | Fit Note |
|---|
| 65 | 62.5-67.5 cm | Petite band range |
| 70 | 67.5-72.5 cm | Common smaller band |
| 75 | 72.5-77.5 cm | Common medium band |
| 80 | 77.5-82.5 cm | Medium plus band |
| 85 | 82.5-87.5 cm | Fuller band range |
| 90 | 87.5-92.5 cm | Extended band range |
| 95 | 92.5-97.5 cm | Extended band range |
Japanese Bra Cup Size Chart
Japanese cup labels are commonly based on centimeter difference between bust and underbust, often in 2.5 cm steps.
| JP Cup Size | Bust minus Underbust | Fit Note |
|---|
| A | About 10 cm | Small cup volume |
| B | About 12.5 cm | Moderate cup volume |
| C | About 15 cm | Fuller cup volume |
| D | About 17.5 cm | Full cup volume |
| E | About 20 cm | Fuller cup volume |
| F | About 22.5 cm | Extended cup range |
| G | About 25 cm | Extended cup range |
| H | About 27.5 cm | Extended cup range |
How Japanese bra sizing works
Subtract your measured underbust from your bust to find the cup difference, then select the band separately. For example, a 72 cm underbust and 87 cm bust give a 15 cm difference and a C70 starting size. Use the measured underbust, not the rounded band label, in this subtraction.
Shopping Japanese bra sizes internationally
Japanese bras can run differently in cup depth and wire shape compared with US or UK brands. Use the chart as a starting point, then check the brand's fit notes.
Notes before you compare sizes
- Japanese cup ranges are approximate and brand-specific charts should be checked.
- Fit can vary significantly between molded, padded, and unlined styles.
Bra size chart FAQs
Are Japanese bra bands the same as EU bands?
Japanese bands often use similar centimeter labels, but product fit and cup construction can still differ.
How are Japanese cup sizes measured?
Japanese cup sizes are commonly based on the centimeter difference between bust and underbust measurements.
Should I convert US sizing directly to JP sizing?
Use conversions only as a starting point. Japanese brands may fit differently in cup depth, wire width, and band stretch.
Check the brand's size guide
