Baker is a program written by Matthew Hinton, specifically to convert base 10 and 12 numbers to the holy base yon, and not back. You will find that it will not convert some very specific numbers. If you run into that problem, run from your computer and repent to Francois for they might be offended at your actions. It is written in C++.
You can get the source code here:
git clone https://github.com/WyvernH/Baker