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Motorcycle Gearing Calculator - RPM to Speed - Shift Tracer - Sprocket and Tire Comparison - Sprocket Spread Graph
Sprocket Spread Graph
Sprocket combinations that vertiacly align are equal in ratio.
Front Sproc Scope
Rear Sproc Scope
Enter gear ratios, primary ratio, sprocket sizes and tire diameter, then drag RPM
slider to calculate speed from RPM.
Drag Max RPM
slider to adjust the range of the RPM and Speedometer Gauges.
Enter Shift at
RPM, select gear to shift to and hit Shift and Trace
to run up through the gears
recording shift point RPM and km/h - mph.
Check Sprockets Compare
and enter alternate sprockets for comparison. The speedometer will display 1 needle for each sprocket set.
Or run Shift and Trace then hit Copy Diagrams
to copy diagrams to page footer, edit and repeat to compare multiple combinations.
To calculate Chain Link adjustment to maintain rear wheel postition when changing sprockets, use our Chain and Sprocket Calculator
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Don't cut it, or cut it wet so there's NO DUST
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