Bike Seat Height Calculator

Two published formulas set saddle height from a rider's inseam, and this tool runs both instead of averaging them into a single answer. Enter your barefoot inseam and your crank length and you get the LeMond figure at 0.883 of inseam, the Hamley and Thomas figure at 109 per cent measured from the pedal, the gap between them and a starting point to ride from. A second action works out how far to move the saddle after a crank length or shoe stack change. The two methods usually land a centimetre or so apart, which is the honest width of the answer; the Holmes knee angle check settles it, and that has to be taken on the bike.