Calculators for your bike setup
Free tools that answer specific questions about your bike. No sign-up, no tracking, everything runs in your browser.
Gear calculator
Is your easiest gear low enough for your climbs? Enter weight, power and gradient to see your cadence on the steepest section and which cassette fits better. For road, gravel and MTB.
Open calculator →Bike fit calculator
New bike, same position? See which stem, how many spacers and which saddle position fit the new frame, or what a different stem changes on your current bike.
Open calculator →Tire pressure calculator
What pressure front and rear? From weight and tire width using Frank Berto's tire drop rule, with a comparison of other widths and the hookless limit.
Open calculator →