Welcome to our archive of calculators! Every calculator available on Data Cranker (cycling, running, fitness, etc) are all stored here.
How to calculate bicycle gear ratio? Simple, just divide your rear cog size from your front chainring size. If you know their numbers, just input them below and we’ll calculate it automatically for you!
Also take a look at our complete bicycle gear ratio chart below to see how your size compares to other gearing options.
Automatically calculate your cycling power zones with ease. Simply input your FTP and we will create your custom cycling power zone chart.
Instantly calculate your LTRH heart rate training zones. This is an affordable solution for both cyclists and runners.
Automatically calculate your cycling Power to Weight Ratio (PWR) and see how you stack up against your local competition. What Does it take to be pro?