Convert dress sizes between US, UK, EU, and Asian sizing. Calculate recommended size from bust, waist, and hip measurements.
Dress sizing varies wildly between countries and even between brands within the same country. A US size 8 is a UK size 12 and an EU size 38 — and "vanity sizing" means a US 8 today is significantly larger than a US 8 from 20 years ago. This calculator converts between all major international systems and recommends your size based on actual body measurements.
Enter your bust, waist, and hip measurements to get a suggested size in US, UK, EU, Italian, French, and Australian systems. The calculator also flags when you're between sizes (common for most people) and recommends sizing up or down based on fit preference and body proportions.
Beyond conversion, the reference tables show the actual measurement ranges behind each size number, helping you understand why a "medium" varies so much between brands. Size-inclusive ranges extend from US 00 through 24+ / 3XL, covering the full spectrum of body types.
International size differences cause returns and frustration. This calculator translates body measurements into the size systems that brands actually print on labels, which is much more useful than trying to guess from a familiar number.
It is useful because fit depends on bust, waist, and hip proportions rather than a single label. Seeing the cross-system range alongside your measurements makes online shopping more predictable.
US Size ≈ (bust inches - 28) ÷ 2 (general estimate). Cross-system: UK = US + 4. EU = US + 30. IT = EU + 2. FR = EU. AU = UK. Actual sizing uses measurement ranges defined by each standard body, with overlap zones between sizes.
Result: US 6–8 / UK 10–12 / EU 36–38
Bust 36" maps to US 6-8 range. Waist 28" and hip 38" are consistent with US 6-8. UK adds 4 (10-12), EU adds 30 (36-38).
US sizes run 0-24+ using even numbers (00, 0, 2, 4, 6...). UK sizes are US + 4 (so US 8 = UK 12). EU sizes are based on half-bust circumference in cm, starting around 32 (XS) to 50+ (3XL). Italian sizes are EU + 2 (EU 38 = IT 40). French sizes equal EU sizes. Australian sizes equal UK sizes.
A 2019 study found that a US "size 8" varied by up to 5 inches in waist measurement between different brands. Fast fashion and luxury brands show the most variability. This is why body measurements, not sizes, should guide purchasing decisions — especially when shopping online across brands.
US plus sizes (14W-24W+) don't convert linearly to EU extended sizes. The "W" designation indicates a different cut with more room through the midsection. Petite sizing applies to garments designed for women 5'4" and under, affecting length proportions but not width measurements.
Each country developed its own sizing system independently. US sizes use arbitrary numbers, UK sizes are similar but offset by 4, and EU sizes are based on bust measurements in centimeters. There's no universal standard, which is why conversion is needed.
Vanity sizing is the practice of labeling clothes with smaller size numbers than the measurements suggest. A US size 8 today has measurements that would have been labeled size 12 in the 1970s. This varies significantly by brand — luxury brands tend to use more vanity sizing.
This is extremely common. If there's a 2+ size difference, consider your dominant measurement (bust for dresses, waist for pants/skirts) and look for styles that accommodate the difference — A-line, empire waist, or structured bodices with fuller skirts.
Bust: around the fullest part of chest, over bra. Waist: at natural waistline (narrowest point, usually above belly button). Hips: around fullest part of hips/buttocks. Stand straight, tape snug but not tight, measure in front of a mirror.
No. US Medium is roughly UK 12, EU 40. But even letter sizes vary between brands. A "Medium" at one brand might match "Large" at another. Always check the brand's specific size chart when available.
Yes, significantly. Asian sizing generally runs 2-4 sizes smaller than US sizing. A US Medium is often a Chinese/Japanese XL. Korean sizing uses a 44-66 system similar to EU numbering but with different measurements.