The ultimate guide to dress size conversion

Whether you're converting AU or US to UK or vice-versa, we've got everything you need to make sure your next online order fits perfectly.

Wondering if you’re actually a size 12 or a 14? Sizes seem to differ from store to store in the UK alone, so online shopping opens up a whole new world of confusion when it comes to international dress sizes. To try and make sense of it – we’ve researched a few different sources and constructed some handy dress size calculators for all your international online shopping needs.

A few easy rules to remember:

  • S/M/L can vary hugely – always check the retailer’s own sizing chart
  • Minus 2 sizes to get your US size (for example, a UK dress size 6 is a US dress size 2)
  • French sizes are also used in Belgium and Portugal
  • German sizes are also used in Austria, Netherlands, Switzerland, Sweden, Denmark and Norway.
  • AU dress sizing is the same as UK

Women’s Dress Size Chart: International

USA02468101214161820
UK4681012141618202224
Australia4681012141618202224
France & Spain3234363840424446485052
Germany3436384042444648505254
Italy3638404244464850525456
Japan5791113151719212327

UK Women’s dress sizes in measurements:

US sizeBustWaistHips
INCHESCMINCHESCMINCHESCM
4317824603383.5
63280.52562.53486
8338326653598.5
10358828703793.5
12379330753998.5
143998318041103.5
1641103338543108.5
1844110.53692.546116

See our top sites to shop for dresses.


Men’s shirt sizes – in measurements:

SizeChestNeck
INCHESCMINCHESCM
XS33-3484-8613-13.533-34
S35-3789-9414-14.536-37
M38-4096-10215-15.538-39
L42-44107-11216-16.540-42
XL46-48116-12217-17.543-45
XXL50-52127-13218-18.546-47
XXXL54-56137-14019-19.548-49

Men’s jacket/suit sizes – international:

USAUKItalyFranceAustraliaJapanChest (inches)Chest (CM)
3434444434S3486
36364646363692
3838484838M3897
4040505040L40102
424252524242107
4444545444LL44112

Men’s trouser sizes:

USAUKItalyFranceAustraliaJapanWaist (inches)Waist (cm)
2828442828XS2871
29294529292974
3030463030S3076
31314731313179
3232483232M3281
33334933333384
3434503434L3486
35355135353589
3636523636XL3692
37375337373794
38385438382XL3897
39395539393999
40405640403XL40102

How to find your dress size?

The best way to determine your dress size is to use a conversion chart such as the ones above. These are based on our research across the web, but if a retailer you’re buying from has their own, it’s best to check that out. Use a tape measure to get accurate bust, waist and hip measurements at home.

What dress size is a ‘Medium’?

This varies from brand to brand and by country. Some stores will consider a medium to be a size 10, while others a size 12-14. As an average, a Medium is likely to be a around a size 12. This is all dependent on retailers, dress cut and shape — so we’d always recommend checking the store’s own sizing chart or using a retailer with free returns.

What dress size is plus size?

It absolutely depends on the retailers, but a lot of plus size-specific retailers will stock from a size 12 and up.

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