Bicycle Gear Ratio Calc is a handy app for cyclists that offers a quick and easy way to calculate various bicycle characteristics. This free tool can help you to calculate the gear ratio of a fixed-gear bicycle, as well as the number of teeth in the chainring, the number of teeth in the rear cog, and the number of chain links for an established chainstay length.

This application works with bikes built with rear-axle drivetrains and classic-looking track frames. However, it can also calculate gear ratios for modern bicycles that have been modified for mountain biking, or have track frames built with bicycle forks. The app is able to provide the required information for bikes built with the latest technology, such as the mountain bikes of this generation, which have integrated electronic drivetrains.

Bicycle Gear Ratio Calc provides a very intuitive interface for entering information. You can use it for entering the bicycle type you wish to check, as well as the gear ratio, the number of teeth in the chainring, the number of teeth in the rear cog, and the number of chain links.