An Australian women’s size converts to EU by adding twenty-six: an Australian 12 is a EU 38. The offset looks arbitrary until you see where it comes from — Australia uses the British ladder, which sits four rungs above the American one, while the EU sits thirty above it, so the gap between Sydney and Berlin is the diff…
12 Australia (numeric) = 38 EU (numeric) · bust ≈ 91 cm (35.8 in)
LETTER SIZE
REGIONAL SIZES
BUST MEASUREMENT
This page is preset to Australian → EU. Type your Australian size (the default is 12) and read the EU size.
The rule is EU = Australian + 26 — Australia follows the UK ladder, four above the US, and the EU sits thirty above it.
Check the bust shown beneath (an AU 12 ≈ 91 cm / 35.8 in), or tap ⇄ to reverse to EU → Australian.
Switch either side to US, UK, Italy, letters or the bust in cm in the dropdowns, then Share or Embed your conversion.
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
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.
Add twenty-six. An Australian number plus twenty-six is the EU size, so an AU 12 is a EU 38, an AU 8 is a EU 34 and an AU 16 is a EU 42. Both describe the same garment; only the label changes.
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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.