Sunica Design logo

Japan Bra Size Charts

Explore our precise Japan’s bra size charts! This guide will offer a clear understanding of bra size standards in Japan, helping you shop in the intimate apparel sector.

Information on the Japan Bra Size Tag

Japan bra size tag translation
Japan bra size tag translation

How to Measure Your Bust

Measuring your underbust and bust accurately is vital to finding your perfect bra size in Japan. Here’s a step-by-step guide:

  1. Prepare a Soft Measuring Tape.
  2. Measure your bandMeasuring Underbust: Stand upright but relaxed. Wrap the measuring tape snugly around your ribcage, right under your bust. Ensure the tape is level and straight across your back. Breathe in and out normally, and take the measurement.
  3. Postures to measure your bustMeasuring Bust: Stand upright with a non-padded bra or lean forward a little. Wrap the measuring tape around the fullest part of your bust. Keep the tape straight and level, not too tight or loose. Record the measurement.
  4. Calculate the Difference: Subtract your underbust measurement from your bust measurement. The resulting number is the difference, which you will need to find your cup size.

Japan Bra Size Charts

Now that you have your underbust and bust measurements, you’re ready to unlock your perfect Japan bra size. Simply match your measurements with the corresponding sizes in these comprehensive charts to discover a world of comfort.

Japan Bra Cup Size Chart
Cup SizeDifference Between Underbust and Top Bust
AAAAbout 5.0 cm, which is 1.97 inches
AAAbout 7.5 cm, which is 2.95 inches
AAbout 10.0 cm, which is 3.94 inches
BAbout 12.5 cm, which is 4.92 inches
CAbout 15.0 cm, which is 5.91 inches
DAbout 17.5 cm, which is 6.89 inches
EAbout 20.0 cm, which is 7.84 inches
FAbout 22.5 cm, which is 8.56 inches
GAbout 25.0 cm, which is 9.84 inches
HAbout 27.5 cm, which is 10.83 inches
IAbout 30.0 cm, which is 11.81 inches
JAbout 32.5 cm, which is 12.80 inches
KAbout 35 cm, which is 13.78 inches
Japan Bra Underbust Size Chart
SizeUnderbust Range (cm)Underbust Range (inches)
6562.5 - 67.5 cm24.61 - 26.57 inches
7067.5 - 72.5 cm26.57 - 28.54 inches
7572.5 - 77.5 cm28.54 - 30.51 inches
8077.5 - 82.5 cm30.51 - 32.48 inches
8582.5 - 87.5 cm32.48 - 34.45 inches
9087.5 - 92.5 cm34.45 - 36.42 inches
9592.5 - 97.5 cm36.42 - 38.39 inches
10097.5 - 102.5 cm38.39 - 40.35 inches
105102.5 - 107.5 cm40.35 - 42.32 inches
110107.5 - 115 cm42.32 - 45.28 inches
115115 - 125 cm45.28 - 49.21 inches
120125 - 135 cm49.21 - 53.15 inches
125135 - 145 cm53.15 - 57.09 inches

Additionally, you may see some bra sizes labeled as S, M, L, etc., in Japan. For these bras, their size standards can be organized as follows:

Japan Bra Sizes From S To 10L
SizeUnderbust Range (cm)Top Bust Range (cm)
S65-70 cm72-80 cm
M70-75 cm79-87 cm
L75-80 cm86-94 cm
LL80-85 cm93-101 cm
3L85-93 cm100-108 cm
4L92-100 cm107-115 cm
5L99-107 cm114-122 cm
6L106-119 cm122-134 cm
8L118-131 cm134-146 cm
10L130-143 cm146-158 cm

Please pay attention that the sizes listed in this table are not strictly standardized. The size ranges can vary between brands and styles. Therefore, we highly recommend trying on bras in person before making your final purchase. It ensures you find the most comfortable and supportive fit, as individual preferences and clothing styles can significantly influence the ideal size.