BikeCalc gets a design refresh ahead of its 15th year anniversary! Access the old version here.

Gear Ratios

(x: chainring, y: sprocket)

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Learn how to use the original and most popular gear ratios calculator for cyclists

The following instructions aim to assist you in effectively using our gear ratios calculator, ensuring a more seamless and informed experience.

  1. Count the number of teeth on the front cog of your bicycle, and select this value in the picker labeled chainring.
  2. Do the same on your rear cog for the picker labeled sprocket.

For more information about gear ratios, please visit our article answering common questions from the community.