GENERIC BIKE COMPUTER
WHEEL SIZE CALCULATOR
Hi! When you're done using this page, check out my new bicycle gear ratio comparison page! Thanks for visiting!
To use the calculator below, select a wheel and tire size from the table or enter the wheel and tire size in mm in the "Dia. (mm)" boxes. It will automatically calculate the estimated circumference in mm (used by most new cycle computers), cm (used by some cycle computers), inches (maybe used by some) and MPH (which is a number used by some Sigma computers which don't automatically convert mm when you want to view your speed in MPH instead of KPH).
You can watch this video for more info or just scroll down and start using the calculator.