Automobile Gear Calculator

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Bewildered by the form? See if the tutorial helps.

Basically, fill in the gear-related values you want, leave blank the value you wish to have calculated.

Ranges of values can be indicated by e.g. "500-10000x500", which might be used for rpm from 500 to 10000 by steps of 500. Or sets of values can be used; in particular you can list many gears, e.g. "3.3,2.4,1.8,1.4,1.0".

the request when it's complete, or and start over.

Final Drive Ratio(s)
Gear Ratio(s)
Tire size(s)
RPM figure(s)   (usually you want a range here)
Speed(s) in mph   (usually you want to leave this blank)

Reorder calculation elements:   (definitely you usually want to leave this blank)

the request when it's complete.