FTP & power zones
Estimate cycling FTP from a 20-minute test, calculate watts per kilogram and find seven practical power training zones with transparent formulas.
Open calculatorFree cycling tools
Calculate less. Understand more.
Four practical tools with visible formulas, careful assumptions, and guidance for using the result. No account, upload, or device connection required.
Heart rate zones
Calculate five cycling heart rate zones, including zone 2, using the Karvonen heart-rate-reserve formula or percentage of maximum heart rate.
Open calculatorCycling load points
Calculate power-based cycling load points from duration, weighted power and FTP, then understand the assumptions behind the result.
Open calculatorWeekly load planner
Create a conservative cycling-load progression with planned recovery and an event-week taper, based on your recent sustainable load.
Open calculatorOur standard
Useful numbers, honest limits
Each calculator exposes the relationship behind its result. Inputs stay in your browser and are not saved. Outputs are planning aids, not medical assessments or guarantees of performance.
Use trends, repeatable protocols, perceived exertion and recovery beside any single metric. If a number conflicts with persistent symptoms or a marked drop in function, stop and seek appropriate professional advice.