Fixed Gear Ratio Calculator

Rim diameter (mm) Tire size (mm) Crank length (mm)

Front chainring teeth Rear sprocket teeth

Gear inches —

Meter development —

Gain ratio —

Skid patches

Rear wheel skid patches based on your chainring and sprocket.

Ambidextrous skids (both feet)

Skid patches —

Cadence (rpm)	Speed (km/h)