Gear Trains - Bicycle Gearing Calculator

Calculate bicycle wheel distance traveled based on pedaling revolutions, chainset teeth, and cassette teeth. Supports both SI and Imperial units.

Bicycle Gearing Calculator

Calculate the distance traveled by a bicycle wheel based on pedaling revolutions, chainset sprocket teeth, cassette sprocket teeth, and wheel diameter.

Formula:

l = π d nD tD / tF

Where:

  • l = distance traveled (m, in)
  • d = outer wheel diameter (m, in)
  • nD = revolutions of pedaling (rpm)
  • tD = number of teeth in pedaling sprocket (chainset)
  • tF = number of teeth in wheel sprocket (cassette)
  • π = 3.14159...
Calculator

Inputs

Results

Distance Traveled-- distance
Movement Ratio (nF/nD)--
Wheel Circumference-- distance
Type of Gear SetMin RatioMax Ratio
Spur gear, external1:15:1
Spur gear, internal1.5:17:1
Helical gear, external1:110:1
Helical gear, internal1.5:110:1
Straight bevel gear1:18:1
Spiral bevel gear1:18:1
Epicyclic planetary gear3:112:1
Epicyclic star gear2:111:1