Bicycle Gear Calculator is a very powerful application for serious cyclists. Measure the wheels, enter the gear numbers, and Bicycle Gear Calculator will calculate the gear ratios and create charts of the Gear Table, Gear Ratio Line Graph, and Gear Ratio Log10 Graph. The measurements can be entered in inches or centimeters and can be displayed in either Imperial or Metric Standard. Also, you can display the calculations in US or Metric Standard Gearing or the Estimated Speed if the cadence is entered.