if you have a 32 inseam then typically your frame size will be 55 and/or 56. But your looking at bikes that don't measure that way, they just say XL or L or M or S? If the bikes in question come only in 3 or 4 sizes usually a 32 inseam is a medium to long; XL would be more for the guy who has a 34 and greater inseam. You need to test ride different sizes to see which one fits best.