A British shopper finds a size 50 jacket on your site. An American shopper sees a 42 and thinks of their own 42. Selling abroad means talking to people used to different size systems, and a conversion chart copied from the internet is rarely enough.
This guide explains why conversions between Italian, European, UK and US sizes cause confusion and how to present them on your site.
Sizes are not a unit of measurement. Each country developed its own system, sometimes with different logic for men and women, and each brand applies the system in its own way. The conversion charts you find online are averages: useful as a guide, often in disagreement with each other precisely on the borderline sizes.
Even within the same system, two brands can fit differently at the same size. That is why a shopper loyal to one brand often gets the size wrong with a new brand, even in their own country.
A conversion translates one number into another number, with all the imprecision of averages. Measurements in centimetres describe the garment as it is, in any country. It is the same principle behind a size recommendation: SizeFlow does not convert labels, it estimates the shopper's body measurements from height, weight, age and gender and compares them with each garment's size sheet.
To build useful size sheets, see the guide on how to build a size chart. Module details are on the SizeFlow page.
No. Conversion charts are averages and disagree with each other, especially on borderline sizes; they should be presented as indicative.
By stating the system used on the label, showing conversions as indicative and always adding body and garment measurements in centimetres.
No, it does not convert labels: it estimates the shopper's body measurements from height, weight, age and gender and compares them with each garment's size sheet.