Made this Base Convertor on a really board day.
Converts a value of Base N to Base M.
It converts the value to Base 10 first, then to the targetted Base.
It works up till Base62, being 0-9, A-Z and a-z in ascending order for character usage.
There is a dummy console project to test the Library.
You can use the Library by just calling BaseConvertor.Convertor.Convert(value, baseValue, targetBase).