Free cycling calculators
Eleven calculators for the questions riders actually ask: what pressure to run, what your FTP means in training zones, how long a climb will take, how many chain links you need. Switch between metric and imperial with one tap, save your weight and FTP once, and every tool remembers them. Everything is calculated in your browser, and nothing leaves it unless you save a result to a free account.
Fit and setup
Training and power
Routes and climbs
Workshop
What makes these different?
Three things. Where cycling has more than one accepted formula, these tools show the methods side by side instead of hiding a single one in a black box. Every page spells out the equation and works through a numeric example, so you can check the result by hand. And the calculators remember your rider profile in the browser, so you type your weight once rather than on every page. The maths runs in your browser and needs no sign-up; a free account only keeps the results you choose to save.