The next iteration of iConvert has been completed! Take a look here at http://www.eisbox.net/iconvert/
Version 2.2 fixes several bugs and adds a new feature for generating Finder-ready Mac OS icons! Complication conversions and additional software are no longer needed; simply download the Mac OS Finder ready version after you convert your icon, Copy & Paste onto [...]

The next iteration of iConvert has been completed! Take a look here at http://www.eisbox.net/iconvert/ Use this free web-based program to convert between icons for all platforms, including Windows, Mac OS X, and Linux. This program contains features that many other online conversion programs do not have, including the ability to import .svg icons, and work [...]