胸围计算器

免费在线文胸尺码计算器,可将您的测量数据转换为合适的罩杯和胸围尺寸。支持美、英、欧、法及亚洲尺码系统。

Bra Size Calculator
How to Measure
Size Chart

Your Measurements

Measure around the fullest part of your bust
Measure snugly under your bust

Measurement Tips

  • Upper Bust: Lean forward 45° and measure around the fullest part of your bust
  • Under Bust: Stand straight and measure snugly around your ribcage under the bust
  • Keep the tape parallel to the floor for accurate results
  • Measure without a bra or wear a thin unlined bra
  • Take measurements 3 times and use the average

Step-by-Step Measurement Guide

What You Need

  • A soft measuring tape (flexible cloth tape measure)
  • A mirror to check your posture
  • A comfortable environment where you can measure accurately

Step 1: Measure Your Under Bust (Band Size)

Stand straight with your arms relaxed at your sides. Wrap the measuring tape snugly around your ribcage, just under your bust. Make sure the tape is parallel to the floor all the way around. Record this measurement in centimeters.

Step 2: Measure Your Upper Bust (Over Bust)

Lean forward approximately 45 degrees so your back is parallel to the floor. Wrap the measuring tape around the fullest part of your bust. The tape should be loose enough to allow a finger to slide underneath but not too tight. Record this measurement in centimeters.

Step 3: Calculate Your Cup Size

Subtract your under bust measurement from your upper bust measurement. The difference determines your cup size:

Cup Size = Upper Bust - Under Bust

Common Cup Size Differences

Difference (cm) Cup Size
10 cmA Cup
12.5 cmB Cup
15 cmC Cup
17.5 cmD Cup
20 cmE / DD Cup
22.5 cmF Cup
25 cmG Cup
27.5 cmH Cup

Important Notes

  • Measurements may vary slightly between brands - always try on before buying
  • Your bra size can change over time due to weight fluctuations, pregnancy, or hormonal changes
  • Re-measure every 6-12 months or after significant body changes
  • Different countries use different sizing systems - use our converter above

International Bra Size Comparison

This chart shows the equivalent band sizes across different international standards.

EU / FR International (cm) US / UK (inches) UK Asia (JP/CN)
6565-6728-293070
7068-7230-313275
7573-7732-333480
8078-8234-353685
8583-8736-373890
9088-9238-394095
9593-9740-4142100
10098-10242-4344105

Cup Size by Country

Cup sizes are generally consistent across countries, but some regions have slight variations:

Cup Difference (cm) US/UK EU Asia
A10AAA
B12.5BBB
C15CCC
D17.5DDD
DD/E20DD/EEE
F22.5FFF
G25GGG
H27.5HHH

Global Bra Size Statistics

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即时结果 无需注册 标准公式 免费使用

关于 胸围计算器 的常见问题

我量出来的差值是12.5cm,为什么不是标准B杯?

这是因为每个国家的杯型定义略有差异。在中国常见的国际标准中,12.5cm确实对应B杯;但在某些欧美品牌中,可能会归类为A+或BB,所以最好参照具体品牌的尺码对照表。

这个胸围计算器真的能用来换算亚洲尺码吗?

当然可以!我们内置了日本、韩国、中国大陆等多个亚洲国家的尺码映射关系,比如70B(国际)≈ 70B(日本)≈ 34B(中国),直接切换选项就能看到对应结果。

它支持手机版吗?能在微信里打开吗?

完全没问题!它是响应式网页设计,适配所有设备。你在手机浏览器里打开,操作逻辑完全一致,测量步骤清晰明了,连老年人也能轻松上手。

使用过程中会弹出广告吗?

不会!这是一个专注于实用功能的专业计算器平台,没有任何第三方广告植入。我们坚持“干净、高效、可靠”的理念,只为解决用户的痛点。

为什么有时候结果和实体店推荐不一样?

因为实体店往往基于经验判断,而每个人的体型结构不同(比如胸距远近、肩宽差异)。这个工具的优势就在于客观量化,帮你排除主观偏差,尤其适合那些长期找不到合适尺码的人群。