SpeedSpin vs Rollout Calculator

SpeedSpin is the ultimate tool for cyclists who want to optimize their performance. With this app, you can easily calculate the speed and distance you cover per pedal stroke based on key parameters such as the chainring teeth, cassette teeth, cadence, and wheel circumference. Want to see how your performance changes by adjusting any of these factors? Don’t hesitate to try our app.

Rollout Calculator Take the guesswork out of youth gear checks. Rollout Calculator instantly computes rollout distance and helps riders, parents, and coaches pick wheel, tyre, chainring and sprocket combinations that meet age‑group limits. What it does - Calculate rollout for any wheel / tyre / chainring / sprocket setup quickly and accurately. - Generate valid gear combinations for a selected age category and rank them by how close they are to the maximum permitted rollout. - Browse and submit real race‑tested setups in the community library to see what other riders use. Key features - Accurate rollout calculator — Factors in wheel diameter, tyre size, and gearing to produce a precise rollout distance. - Combination generator — Suggests practical chainring and sprocket options for your age category and sorts them by margin to the limit. - Community library — View and share actual race combinations to learn from other riders and coaches. - Fast results — Get answers in seconds, no spreadsheets or manual measuring required. - Race‑ready guidance — Helps avoid last‑minute gear changes at sign‑on and reduces setup stress on race day. How to use - Enter wheel and tyre dimensions plus chainring and sprocket sizes. - Use the main calculator to see the rollout distance for your exact setup. - Use Generate to find compliant combinations for your age group and compare options. - Visit the Community page to submit or review real race setups. Who it’s for Young riders, parents, coaches, and club volunteers who want a simple, reliable way to check youth gear limits and prepare confidently for race day. Privacy & support Rollout Calculator respects your privacy and stores community submissions locally unless you choose to share. For support or feedback, use the in‑app help.