Gear Ratio and RPM to MPH Calculator with Auto Shift and Tracer
Enter Gear and Diff Ratios and drag RPM Slider
See also: Printable Full Scale Degree Wheels
Dial in your cam - and Printable Timing Tape
Enter Diff + Gear Ratios and tire diameter, then drag
slider to calculate speed from RPM.
Drag Max RPM
slider to adjust the range of the RPM and MPH Gauges.
Enter Shift at
RPM, select gear to shift to and hit Auto Shift
to run up through the gears
recording shift point RPM and MPH.
For motorcycles, check Sprockets
and enter Primary Drive Ratio and front and rear sprocket tooth count to calculate final drive ratio.
Set current entries as default on page load.
Please Let us Know
the transmissions you'd like to add to the Select Transmision
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Don't cut it, or cut it wet so there's NO DUST
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