Bike Size to Human Size Conversion Chart I am just shopping for used bikes right now online.  I want to try and save myself a trip to visit the bikes by determining which bikes will fit me.  

Does anyone have an approximate height-bike size conversion chart or inseam-bike size conversion chart?

I know that this will not 100% accurate as Sheldon Brown observes.  I was just hoping to get an approximation.
IMO single most important factor of cycling joy is FIT!

This is a great tool and worth the effort: 
http://www.competitivecyclist.com/za/CCY?PAGE=FIT_CALCULATOR_INTRO

I have used it myself and referred countless folks to it, all with great success! Good luck!