Origami Calculator
Veii's Origami Calculator
Since Veii has seemingly disappeared off the web, I took the liberty of reposting her calculator page here. Please note that I take no credit for this at all; I am simply keeping it alive, since it was the best origami calculator that I came across.
Reading the Results
The best figure for you is one where you can fold the first fold (STUDY PATTERN) and one you can complete (FOLD PAPER) the figure.