Built for bike geeks

Welcome to the world's biggest open database of bike frame geometries. 5441 bikes and growing daily!

Easily compare different bikes and sizes side-by-side.

If your bike isn't listed yet, it's simple to add it.

NEW! Try our new automagic bike-adder.

Your ad here?

We're looking for a site sponsor in your country.

Email us if you'd like to support the site in return for tasteful advertising to our fast-growing community of bike nerds.

Comparison examples

Check out what the site can do with...

Target: all the bikes

There are 23979 geometries in the database.

That's 5441 bikes, from 582 brands.

  Add a bike

Bike Fitters

We also have the world's largest database of fitters!

Find a local bike fitter and get professional help.

  Find your local fitter

  Lists by country and state


Talk to us

Give us feedback with this tool, or drop us an email at hello@geometrygeeks.bike

Manufacturers & distributors

Join the likes of Cannondale, Niner, Boardman, Sensa, Ghost, Singular, Enigma and Mason and list all your models. Just ask - we can bulk upload.

Like this project? Subscribe for occasional emails about new things. No Spam. Promise.