i was a bit surprised to completely fail in finding an online arbitrary base converter which didn't need a download, so wrote this real quick-like.
note that the stock decimal alphabet is "0123456789", but you could do something crazy like "987654310" if you want.
this would make a handy decoder ring type thing, if only the number values could be arbitrarily large too..
thanks to "ben" for pointing out that "#" is not URL-safe.
and to patrick for pointing out that "+" isn't, either.
and to "mike" for pointing out that for SMS urls, only [a-zA-Z0-9] are safe.
orion elenzil 20080905