Currently there is no way to, I haven't heard of any converters so that's news to me, but as you said if they are outdated they aren't going to work. Consoles are currently running the PC equivalent of 1.3.0.7, so unfortunately I am unaware of any way to transfer character and worlds from the console version to the PC version.
However, for characters you can use character/save editors to create a character and add all the equipment you have on your console character. The inventory editor I like to point people to is
TerraSVR an online inventory editing tool that's helpful for recovering lost characters.