Gear ratio’s in the bike gear ratio chart are determined by dividing the number of teeth on the front chainring by the number of teeth on the rear cog. A larger number indicates a large gear that is harder to turn over and is used for higher speed. A smaller number is easier to accelerate and can still be pushed on steep climbs. As you can see, the same ratio can be achieved whether you are riding in the large chain ring or small by altering the cog in the rear.
Bike Gear Ratio Chart
