About GearViz

Bike Gear Ratio Visualizer is a focused, independent web utility at bike-gear-ratio-visualizer.hub2.day that helps road cyclists, gravel riders, mountain bikers, and bike mechanics instantly see what their drivetrain actually does — without doing mental math across 22 gear combinations.

What It Does

Enter your chainring sizes, cassette range, wheel size, and crank length. The tool generates a visual representation of every gear combination, including speed-at-cadence charts, gradient capability estimates, and direct comparisons against other drivetrain setups. You can see exactly what you gain or lose before swapping components.

Why It Exists

Choosing the right drivetrain setup involves comparing many interrelated numbers. This site brings those numbers together in one place so you can make informed decisions quickly. It is designed to be straightforward and practical — no account required, no clutter, just the data you need.

Contact

Questions, feedback, or suggestions? Reach out at hello@bike-gear-ratio-visualizer.hub2.day.