The luxury size converter
Your size,
in every house.
Tell ÉTALON the size you wear at one maison, choose the house you are shopping at, and see your size there in EU, IT, UK, US and centimetres, with a note on how the fit runs.
Made for the way you shop
One screen, one answer.
Pick a category, the house and size you know, and the house you want. Your size appears in large type, with every equivalent beneath it.
Forty houses
The launch collection covers forty luxury houses for women and men. Well-known high-street brands work as a starting point.
Shoes to outerwear
Shoes, trousers, jeans, tops, dresses, shirts, suits, knitwear and outerwear, on women's and men's scales.
A note on the fit
Every result says whether the house runs small, true or large, written for that product type: sneakers, heels, boots, loafers and more.
Size memory
Every size you know is kept in My sizes, grouped by category. Tap one to start the next conversion from it.
Profiles
Shop for the people you dress. Each profile keeps its own measurements and sizes. Sign in to keep them on every device.
Size charts
Open any house's size chart, save the conversions you want to return to, and share a result with a tap.
Inside the app
Quiet, precise, made to be quick.




ÉTALON Privé
Unlimited, for those who shop often.
ÉTALON is free to try with three complimentary conversions and two profiles. Privé unlocks unlimited conversions and unlimited profiles.
- MonthlyRenews every month
- YearlyRenews every year
- LifetimeOne-time purchase
Know your size before you buy.
Free to download. No account needed to start.
Sizes are guidance based on each house's published size charts. Fit can vary by collection and style.