Frame size calculators for road bikes, mountain bikes, city bikes, bmx etc.

Bike Gears Calculator


Click here to read English Version of this page to CALCULATE  BICYCLE FRAME SEAT HEIGHT - DISTANCE SADDLE - STEM IN ACCORDANCE WITH Bernard Hinault METHOD  English


The calculator provides Meters of Development for this wheel and bicycle speed to all combinations of gears

Kph mph

wheel circumference in centimeter   how to measure the circumference of the bicycle wheel

Min. Chainring

Max. Chainring

Min. cog


Cadence (rpm)