Free Tools

Cycling tools, free and instant

Useful calculators for riders — no sign-up, no email. They work on their own, and they're a head start on coaching your training with Claude or ChatGPT.

• Power · Heart Rate

  Training Zones Calculator

  Turn your FTP and threshold heart rate into power and heart-rate training zones — Coggan power, Friel heart rate. Instant, in your browser.