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Calculators:

Displacement
converts
displacements

G Force
mph to rpm
and
tire G Force

Top Speed
from tire rpm

Gear Ratio
over all ratio

Crawl Speed
How slow can you go?

Gearing
calculate mph from rpm and gearing

GPS
convert coordinates between three different units types


Calculate MPH from RPM and Gearing

This calculator requires a JavaScript compatible browser.

Fill in your values by double clicking on "number".Click on when finished.
You can also calculate when using different transmission gear ratios

RPM you wish to check Rear Axle Gear ratio (i.e., 3.08, 3.55, etc.)
Transmission Gear ratio (i.e., 2.54, 1.43, 1.00, etc.) Tire diameter in inches (24.5, 26, 27.5, etc.)

The speed is MPH. The same tire and RPM will give the following speeds
based on the following gear ratio changes.

2.59 2.73 3.08 3.36 3.55 3.70 4.11 4.56


Members click here for updating instructions
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