About

sedimi.bike is free. Enter your riding position and see which road and gravel bikes fit, in which size and with which stem.

I’m Marcel Dobrocký, a bike fitter from Brno in the Czech Republic. My studio is Bikefit Space.

After a fit, clients often ask me which bike to buy to keep their new position. The answer is in the geometry, the stock stem, the crank length and whether the cockpit can be swapped at all. I started collecting that data for my own work. Now it’s here for everyone.

Why “sedimi”

“Sedí mi” is Czech for “it fits me”. It’s what a rider says when a bike feels right, and it’s the question this site answers: will another bike fit you the way yours does now? There’s a Czech version with the same data at sedimi.cz.

Nothing is for sale here. No brand pays to be listed and I take no commission on links. The data comes from the manufacturers, and every model page links its source.

I only log which models get viewed and compared, and which searches come up empty. That tells me what to add next. No cookies, no IP addresses. The position you enter isn’t stored anywhere. It stays in your browser, and in the link if you choose to share it.

There’s no sizing by height here, on purpose. How you sit depends on leg, torso and arm length, flexibility and riding style, so two riders of the same height often need different bikes.

Found a mistake or a missing model? Email me at [email protected]. Every correction is logged publicly on the Corrections page.