Hey Rusty,
There are probably sites that can give you a general idea of what you’re dealing with when it comes to hook sizes. The problem is, hook sizes can change drastically depending on the style (i.e. shank length, gape width, bend, etc.). Hook size can also be pretty different depending on the manufacturer. If you can narrow down what you’re looking for to a specific style – for example, a standard length shank dry fly hook, it might be a little easier to point you in the right direction.
That probably didn’t help at all…
Ian