>>2047714
on traditional style bikes where the top tube is horizontal, parallel with the ground, you can roughly eyeball your size to weed out stuff that will for sure not fit. you're looking for something that looks like this red bike. see how the two tubes are almost touching at the front headtube? this bike is probably a little small for you but you get the idea.
a little small can be tweaked although I recommend waiting to find the right size. but too big is not doable and can be downright dangerous as it won't handle correctly and you can't emergency dismount without destroying your nuts.