About SneakerFrenzy

Shoe sizing is genuinely confusing. A US 10 is not the same as a UK 10. EU sizes look nothing like either. Korean sizing uses millimetres. And that is before you factor in that men's and women's sizing charts are completely different, or that Converse run nearly two full sizes big. SneakerFrenzy.com exists to cut through that confusion in about three seconds.

The tool converts sneaker sizes across US, UK, EU, CM and Korean sizing — for men, women and kids — instantly, in your browser, with no sign-up or account required. There is also a foot length calculator if you have never been properly sized, and a brand guide covering how major names like Nike, Adidas, Jordan, Vans and Converse tend to fit relative to their stated size.

It is built for anyone buying sneakers — whether that is shopping internationally, ordering from a brand you have not tried before, or just double-checking before you drop money on a pair you cannot return. That covers a lot of people, which is why we made it free and kept it simple.

There is no business model that requires your data. The site is ad-supported, which keeps it free for everyone. Nothing you enter is sent anywhere — the whole thing runs locally in your browser.

SneakerFrenzy.com is built and maintained by Rose Venture Labs, a small venture studio focused on building useful tools that people actually come back to.