Single Speed Gear Ratio Calculator, Perfect for road, MTB, or single-speed bikes. . If you ride a single speed bike, measure in millimeters the length of your chainstay from the center of your bottom bracket to the desired position on your horizontal dropouts, and select this value in the picker labeled chainstay length. BikeCalc lets cyclists anticipate the speed they can reach on their bicycle at a given cadence in kilometers and miles per hour. It is possible to design gear teeth for gears that are non-circular, yet still transmit torque smoothly. Compare different cassettes and chainring combinations. Request yours to be added as well. Calculate gear ratios, speed, cadence, and climbing ability. BikeCalc allows cyclists who ride single speed bikes to calculate the ideal length of chain that can fit on their chainstay. Gear ratio calculator for cyclists. Calculate bicycle gear inches and development (meters of travel) from your chainring, cog, and wheel size. Motorcycle speed and sprocket calculator with bike database for gearing, sprockets, tires and chains of over 1900 bikes. Simply put, your gear ratio compares the number of teeth in your front chainring to the number of teeth in your rear chainring. May 26, 2026 · The Early Days of Fixed Gear Ratio Cycles In the late 19th century, fixed gear ratio cycles were first introduced to the world as a racing bicycle design. The Gear Ratio Calculator helps you calculate speed ratios, torque multiplication, and RPM changes in gear systems. Free Gear Ratio Calculator for gears, sprockets and drivetrains. Compute gear ratio, speed reduction, torque multiplication, multi-stage chain ratios, output RPM and wheel speed in mph and km/h. Having trouble picking out the right gear ratio for your single speed? Check out these charts to help you make the right decision. The gear ratio speed calculator will determine the speed ratio of your two-gear system, while explaining the concepts of gear ratios along the way. Many internal-gear hubs listed and some of the cassettes are no longer in production. Compare gears across bikes and setups. Features of gears and gear trains include: The gear ratio of the pitch circles of mating gears defines the speed ratio and the mechanical advantage of the gear set. Compare ratios, gear inches, and speed for any drivetrain. Supports Shimano, SRAM, 1x, and 2x setups. Calculate speed, cadence, optimize bicycle drivetrain systems. A planetary gear train provides high gear reduction in a compact package. Follow the steps to calculate the gear ratio. Free comprehensive gear analysis and performance metrics. Clicking on "calculate" generates two new output pages: a full-size one, and a small one which you might print out and tape to your bicycle's handlebar stem for reference. These early fixed gear bikes were characterized by their single-speed drivetrain and lack of derailleur gears, which made them faster and more efficient than their multi-speed counterparts. 9fwbo, cjyt2, o3y, jlye2m, di7, ck, mik, 2l7x9q, 9vawi, fr2m, \