proper wheel diameter?

i just started riding maybe a month or so ago on a unicycle i got at my local flea market. the wheel measures about 20" in diameter, and i was wondering what the ratio was between height and wheel size for when i eventually upgrade.

i’m about 6’ tall.

It doesn’t really matter what you ride. You want to choose the wheel diameter that corisponds with riding style you are looking into getting into. I.e.-20’’ for trials, street, and freestyle or 24-29" (about) for MUNI or 29-36" for touring/road riding. It all depends on what you want to do. Since you’re 6’ a 24" wheel might be better than a 20" to learn on, but since you already have the 20" just stick with it.

Yep… what MP Uni said.