Combining precise calculations and an intuitive design, BikeCalc provides you everything you need to analyze and optimize the gearing on your bicycle, saving you time, guesswork and potentially a costly mistake. - Gear Ratios BikeCalc offers a wide range of gear sizes for BMX, CX, MTB, road bikes, track bikes, fixies, recumbents and many more. - Gear Inches BikeCalc provides the customary gearing system still in use today by most English speaking countries. - Development Meters BikeCalc provides the metric based gearing system used by the UCI governing body for international competitive cycling events. - Gain Ratios BikeCalc supports the newest gearing system proposed by the renowned expert bicycle mechanic Sheldon Brown. - Skid Patches BikeCalc allows fixed gear cyclists who skid stop to extend the lifespan of their rear tire by increasing the number of patches. - Chain Links BikeCalc allows cyclists who ride single speed bikes to calculate the ideal length of chain that can fit on their chainstay. - Speeds BikeCalc lets cyclists anticipate the speed they can reach on their bicycle at a given cadence in kilometers and miles per hour. - Tire Sizes BikeCalc follows the ISO 5775 specifications and provides a convenient table to convert older tyre sizes. BikeCalc makes it easy to optimize the gearing on your bicycle. You can also calculate your speed at a given cadence for each gear. Plus, you can manage all your gearing configurations in one place. And there are articles helping you every step of the way. - Find the gear that works for you Make informed decisions about your bicycle gearing based on your needs. - Take full control of your bicycle Build your custom cassette from scratch with professional charts and visual indicators. - Compare similar gear combinations Weight out even-handed options with convenient color coded tables. - Calculate your speed at a given cadence Plan your next assault and get ready to smash your Strava KOM/QOMs. - Save more than one configuration Keep track of all your configurations for different cycling disciplines and events. - Share your gear configurations Let your coach, teammates or cycling friends know what gearing you're on. - Organise your various sets of configurations Keep everything relevant by creating folders and assigning appropriate tags. - Search with predictive text Find what you need quickly or pick a query from your history. - Protect your data with privacy features Enable biometric authentication to access your recently deleted configurations. - Contact us from the app Reach out for help or send feedback using the contact form. - Learn more about bicycle gearing Visit our short articles answering common questions from the community. ***The original gear calculator for cyclists*** ***Trusted by 40,000+ cyclists every month***