Australian Women’s Size to US

An Australian women’s size converts to US by subtracting four: an Australian 12 is a US 8. Australia adopted the British ladder wholesale, so the Australian number and the UK number are identical — an AU 12 is a UK 12 — and New Zealand follows the same run. Neither figure is a measurement: unlike men’s tailoring, where…

8

12 Australia (numeric) = 8 US (numeric)  ·  bust ≈ 91 cm (35.8 in)

12 Australia (numeric) IN EVERY SYSTEM

LETTER SIZE

REGIONAL SIZES

BUST MEASUREMENT

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HOW TO USE

  1. 1

    This page is preset to Australian → US. Type your Australian size (the default is 12) and read the US size.

  2. 2

    The rule is simply US = Australian − 4, so an AU 12 is a US 8 and an AU 8 is a US 4.

  3. 3

    Check the bust shown beneath (an AU 12 ≈ 91 cm / 35.8 in), or tap ⇄ to reverse to US → Australian.

  4. 4

    Switch either side to UK, EU, Italy, letters or the bust in cm in the dropdowns, then Share or Embed your conversion.

QUICK REFERENCE

US 8

EU 38

M

US 8

UK 12

US 8

US 6

IT 42

EU 38

UK 12

S

Bust 87 cm

JP 11

US 8

L

EU 42

US 4

FR 36

Bust 91 cm

M

ABOUT WOMEN’S CLOTHING SIZES

Women’s sizing works differently from men’s, and it catches people out. A men’s 40 is literally a 40‑inch chest, so the maths is exact. A women’s US 8 is not “8” of anything — it is just the eighth step on an arbitrary ladder, and every country numbers that same ladder differently. Line them up against the bust and the pattern appears: the UK adds four to the US number, Germany and the wider EU add thirty, France adds thirty‑two, and Italy and Russia add thirty‑six — so one garment that fits a 91‑cm (36‑inch) bust is a US 8, a UK 12, a EU 38, a French 40, an Italian 44 and a Japanese 11, all at once. Letters sit on top of that ladder, each one covering two US sizes: S is a US 4–6, M a US 8–10, L a US 12–14. Korea’s 44–99 run works the same way, and China codes the garment as height/bust — 165/88A means a 165‑cm frame with an 88‑cm bust. Because the steps are bands rather than points, converting always snaps to the nearest standard size, and no chart can beat the brand’s own: women’s sizing carries decades of vanity sizing, so the same body can be a 6 in one shop and a 10 in the next. Measure your bust at its fullest point with the tape level and snug, treat the number as a starting point, and size up if you are between sizes or prefer room.

FREQUENTLY ASKED QUESTIONS

Subtract four. An Australian number minus four is the US size, so an AU 12 is a US 8, an AU 8 is a US 4 and an AU 16 is a US 12.

  • US = Australian − 4.
  • AU 12 → US 8.
  • AU 8 → US 4.
  • Same garment, different label.

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Last updated: · 14 women’s clothing systems · Bust-based conversions (UK = US + 4; EU/DE = US + 30; FR = US + 32; IT/RU = US + 36; JP = US + 3); sizes snap to the nearest standard size and letter sizes are approximate · Verified by the EagleCalculator team · Eagle-eyed accuracy for every calculation.