Apex Conversion

👙 KR Bra Size to US Bra Size Converter

Free online tool to convert KR bra sizes to US. Enter your band and cup size for an instant, accurate result — band and cup both converted.

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Result

34C

75C KR = 34C US

KR Bra Size to US Bra Size Conversion Table

KR SizeUS Size
65A KR30A US
65B KR30B US
65C KR30C US
65D KR30D US
65E KR30DD US
65F KR30DDD US
70A KR32A US
70B KR32B US
70C KR32C US
70D KR32D US
70E KR32DD US
70F KR32DDD US
75A KR34A US
75B KR34B US
75C KR34C US
75D KR34D US
75E KR34DD US
75F KR34DDD US
80A KR36A US
80B KR36B US
80C KR36C US
80D KR36D US
80E KR36DD US
80F KR36DDD US

Conversion Formula

Band conversion reference:
  US/UK:  28   30   32   34   36   38   40   42   44
  EU:     60   65   70   75   80   85   90   95  100
  FR:     75   80   85   90   95  100  105  110  115
  AU:      6    8   10   12   14   16   18   20   22
  JP/RU/KR: same as EU

Cup conversion — canonical index (12 sizes, index 0–11):
  US:     AA  A   B   C   D   DD  DDD  G   H   I   J   K
  UK/AU/FR: AA  A   B   C   D   DD   E   F  FF   G  GG   H
  EU/JP/RU/KR: AA  A   B   C   D   E   F   G   H   I   J   K

Common mistakes:
  US DDD ≠ UK DDD — US DDD = UK E
  US G ≠ EU G — US G = EU G (index 7 matches here)
  US DD = UK DD (same), but US DD = EU E (different)

About KR Bra Size to US Bra Size Conversions

This free KR to US bra size converter handles both band and cup sizes accurately — including the differences between US DDD, UK E, and EU F at the larger end of the scale. Select your band and cup below for an instant result.

This conversion uses a non-linear (reciprocal) relationship, so a simple multiplication factor does not apply. The formula section below explains the method, and the reference table shows common converted values.

Below you will find a pre-calculated conversion table, the exact formula used, and answers to common questions about KR Bra Size to US Bra Size conversions. All calculations follow internationally recognized standards.

Frequently Asked Questions

How do I convert KR Bra Size to US Bra Size?

This conversion is non-linear. Use the calculator above for accurate results, or refer to the formula section on this page.

How many US Bra Size are in 1 KR Bra Size?

The relationship between KR Bra Size and US Bra Size is non-linear. Use the calculator above or the reference table on this page for specific values.

Is KR Bra Size larger or smaller than US Bra Size?

The size relationship between KR Bra Size and US Bra Size depends on the input value because this conversion is non-linear (reciprocal).

When would I use US Bra Size instead of KR Bra Size?

Use US sizing when shopping brands that label their products in the US system — for example, European luxury brands, UK high street stores, or Japanese lingerie retailers. Always verify sizing with the brand's own chart, as fit can vary by style and manufacturer even within the same system.

Why doesn't my cup letter stay the same when converting between systems?

Cup letters are only consistent up to D cup. From DD upward, the US uses DD, DDD, G, H, I while UK and AU use DD, E, F, FF, G, GG, H, and EU uses E, F, G, H, I. This means US 34DDD = UK 34E = EU 75F. The band number also changes because each system uses a different scale — US in even inches, EU and JP in 5 cm increments, FR adds 15 to the EU number, and AU uses garment numbers.

What is the most common conversion mistake with international bra sizes?

The most common mistakes are (1) keeping the cup letter unchanged when it should change — US DDD is NOT UK DDD, it is UK E; and (2) only converting the band while ignoring the cup. Both band and cup must be converted for an accurate size. A second common mistake is confusing EU and FR sizing: FR sizes are EU + 15 in the band but use the same cup letters.

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All conversion results are provided for general informational purposes only. Our formulas use internationally recognized conversion factors; however, rounding may affect precision. Do not rely on these results for professional, medical, legal, or engineering decisions without independent verification. Read our full disclaimer.