Mountain Bike Gear Range Calculator. If you want more numbers, including speed and cadence data, Jake Odell has a more elaborate gear calculator: HPV Drivetrain Analyzer (note — the page is available in the Internat archive but the calculator doesn't work). Simple, just divide your rear cog size from your front chainring size.
Mountain bike frame sizes are slightly different and the units used in bike sizes vary depending on type and brand. Why Traveling Cyclists Care Gear inches give you a way to compare the distance you travel with one revolution of the crank. RPM range vs. speed is given in Mike Sherman's gear calculator.
If you know their numbers, just input them below and we'll calculate it automatically for you!
Fortunately, our mountain bike size calculator takes away the guesswork as it suggests mountain bike frame size in either inches or.
It can be used to compare different setups to find the optimal gearing for all kinds of bicycles. A bike of an appropriate size is a precursor to establishing a good bike fit. The gear ratios you want to use for a hilly cycling holiday in Mallorca are not the same as the gears you want for a time trial, criterium, club ride or city riding.